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  • Question 1 - A 4-year-old boy is brought to the doctor's office because of a rash...

    Correct

    • A 4-year-old boy is brought to the doctor's office because of a rash on his upper arm. During the examination, the doctor observes several raised lesions that are approximately 2 mm in diameter. Upon closer inspection, a central dimple is visible in most of the lesions. What is the probable diagnosis?

      Your Answer: Molluscum contagiosum

      Explanation:

      Understanding Molluscum Contagiosum

      Molluscum contagiosum is a viral skin infection that is commonly seen in children, particularly those with atopic eczema. It is caused by the molluscum contagiosum virus and can be transmitted through direct contact or contaminated surfaces. The infection presents as pinkish or pearly white papules with a central umbilication, which can appear anywhere on the body except for the palms of the hands and soles of the feet. In children, lesions are commonly seen on the trunk and in flexures, while in adults, sexual contact may lead to lesions developing on the genitalia, pubis, thighs, and lower abdomen.

      While molluscum contagiosum is a self-limiting condition that usually resolves within 18 months, it is important to avoid sharing towels, clothing, and baths with uninfected individuals to prevent transmission. Scratching the lesions should also be avoided, and treatment may be considered if the itch is problematic. However, treatment is not usually recommended, and if necessary, simple trauma or cryotherapy may be used. In some cases, referral may be necessary, such as for individuals who are HIV-positive with extensive lesions or those with eyelid-margin or ocular lesions and associated red eye.

      Overall, understanding molluscum contagiosum and taking appropriate precautions can help prevent transmission and alleviate symptoms.

    • This question is part of the following fields:

      • Dermatology
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  • Question 2 - A toddler is brought to your clinic as the mother has noticed some...

    Correct

    • A toddler is brought to your clinic as the mother has noticed some skin lesions on the child's face. Upon examination, you observe multiple small white papules on the nose. What is the probable diagnosis?

      Your Answer: Milia

      Explanation:

      Milia, which are often found on the face of newborns, are a normal occurrence and can be seen in up to 50% of babies. They typically disappear on their own within a few weeks.

      Understanding Milia: Small, Benign Cysts on the Face

      Milia are small cysts that are filled with keratin and are typically found on the face. These cysts are benign and are not harmful to one’s health. Although they can appear at any age, they are more commonly found in newborns. Milia are often described as small, white bumps that are painless and do not cause any discomfort.

      While the exact cause of milia is unknown, they are thought to occur when dead skin cells become trapped in the skin’s surface. They can also develop as a result of using heavy skin care products or as a side effect of certain medications. In most cases, milia will disappear on their own without any treatment. However, if they persist or become bothersome, a dermatologist may recommend treatment options such as extraction or chemical peels.

    • This question is part of the following fields:

      • Dermatology
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  • Question 3 - A father brings his 4-year-old daughter to your clinic with worsening eczema. He...

    Correct

    • A father brings his 4-year-old daughter to your clinic with worsening eczema. He reports that she has developed itchy blisters all over her body, including her face, torso, arms, and legs. Additionally, she is not behaving normally, eating and drinking less than usual, and not engaging with her favorite toys. She also has a fever of 39ºC. What is the most suitable course of action?

      Your Answer: Refer urgently to hospital

      Explanation:

      Immediate hospitalization and administration of IV antivirals are necessary for the treatment of eczema herpeticum, a severe condition. The child in question is exhibiting symptoms such as painful blisters, fever, and swollen lymph nodes, which require urgent medical attention. Any delay in seeking medical help could worsen the condition. Therefore, all other options are incorrect and should be avoided.

      Understanding Eczema Herpeticum

      Eczema herpeticum is a serious skin infection caused by herpes simplex virus 1 or 2. It is commonly observed in children with atopic eczema and is characterized by a rapidly progressing painful rash. The infection can be life-threatening, which is why it is important to seek medical attention immediately.

      During examination, doctors typically observe monomorphic punched-out erosions, which are circular, depressed, and ulcerated lesions that are usually 1-3 mm in diameter. Due to the severity of the infection, children with eczema herpeticum should be admitted to the hospital for intravenous aciclovir treatment. It is important to understand the symptoms and seek medical attention promptly to prevent any complications.

    • This question is part of the following fields:

      • Dermatology
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  • Question 4 - A 67-year-old woman comes to her General Practitioner complaining of severe mucosal ulceration...

    Incorrect

    • A 67-year-old woman comes to her General Practitioner complaining of severe mucosal ulceration and blistering lesions on her torso and arms. Upon examination, the blisters are flaccid and rupture easily upon contact. What is the most appropriate course of action for this likely diagnosis? Choose the BEST management option from the list below.

      Your Answer: Topical clobetasone butyrate

      Correct Answer: Refer urgently to dermatology

      Explanation:

      Urgent Referral to Dermatology for Pemphigus Vulgaris Treatment

      Pemphigus vulgaris requires urgent referral to the Dermatology Team for investigation and treatment. Supportive measures include wound care and antiseptic regimens to reduce the risk of secondary infection. Patients should also avoid activities that may traumatize the skin and mucous membranes during active phases. Topical steroids are used in milder cases, while systemic corticosteroids with topical treatments are preferred in advanced cases. Emollients and oral antihistamines are not first-line treatments. Topical clobetasone butyrate can be used in mild cases, but referral to Dermatology is still necessary. Topical clotrimazole is not a first-line treatment, and topical dapsone should not be started immediately without further investigation and treatment from Dermatology.

    • This question is part of the following fields:

      • Dermatology
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  • Question 5 - An 80-year-old man visits his GP complaining of a painful lesion on his...

    Incorrect

    • An 80-year-old man visits his GP complaining of a painful lesion on his ear that has been bothering him for a year. The lesion has remained the same for several months but is causing him significant discomfort when he lies down. He reports no other symptoms.
      Upon examination, the doctor observes a well-defined, 10mm, flesh-colored nodule on the superior helix of the ear. The nodule is firm, very tender to touch, and covered with some scales.
      What is the most probable diagnosis?

      Your Answer: Basal cell carcinoma

      Correct Answer: Chondrodermatitis nodularis helicis

      Explanation:

      Chondrodermatitis nodularis helicis is a painful, non-cancerous nodule that commonly occurs on the ear, particularly in men. Based on the patient’s level of pain and the stable nature of the lesion, this is the most likely diagnosis. While squamous cell carcinoma is a possible differential, it typically progresses more rapidly than this lesion. Similarly, basal cell carcinoma usually develops gradually and is not typically associated with significant pain. Although actinic keratosis can cause a scaly lesion on the ear, it is usually not as painful as chondrodermatitis nodularis helicis and tends to progress slowly over time.

      Understanding Chondrodermatitis Nodularis Helicis

      Chondrodermatitis nodularis helicis (CNH) is a harmless condition that is characterized by the formation of a painful nodule on the ear. It is believed to be caused by various factors such as continuous pressure on the ear, trauma, or exposure to cold. This condition is more prevalent in men and tends to occur more frequently as one ages.

      To manage CNH, it is essential to reduce pressure on the ear. This can be achieved by using foam ear protectors while sleeping. Other treatment options include cryotherapy, steroid injection, and collagen injection. However, surgical treatment may be necessary in some cases, although there is a high likelihood of recurrence.

      Overall, understanding CNH is crucial in managing this condition effectively. By taking the necessary precautions and seeking appropriate treatment, individuals can alleviate the pain and discomfort associated with CNH.

    • This question is part of the following fields:

      • Dermatology
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  • Question 6 - A 25-year-old man presents to his General Practitioner with a 1-week history of...

    Incorrect

    • A 25-year-old man presents to his General Practitioner with a 1-week history of an itchy rash on the inner aspect of his elbows on either side. He states that this came on suddenly and that he has had similar episodes in the past, the first of which occurred when he was around seven years old. He claims to only suffer from generally dry skin and asthma, which he controls with emollient creams and inhalers, respectively.
      Given the likely diagnosis, which of the following is the best next step?

      Your Answer: Skin patch testing before starting treatment

      Correct Answer: No further testing required; start treatment

      Explanation:

      Diagnosis and Testing for Atopic Eczema

      Atopic eczema is a common skin condition that can cause significant physical and psychological distress to patients. Diagnosis is usually made based on clinical presentation and history, with no further testing required. The UK Working Party Diagnostic Criteria can be used to aid in diagnosis. Treatment options include emollients, topical steroids, and other medications in severe cases.

      Radioallergosorbent testing (RAST) and skin patch testing are not useful in diagnosing atopic eczema, as they are mainly used for other types of hypersensitivity reactions. Skin prick testing may be used to diagnose allergies that could be exacerbating the eczema. However, it is important to note that atopic eczema is a clinical diagnosis and testing is not always necessary.

    • This question is part of the following fields:

      • Dermatology
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  • Question 7 - A 31-year-old female patient visits the GP office with a concerning facial rash....

    Correct

    • A 31-year-old female patient visits the GP office with a concerning facial rash. She reports that the rash worsens after consuming alcohol and has not attempted any treatment before. During the examination, the doctor observes facial erythema, papules, and pustules scattered on the chin and cheeks, and telangiectasia of the lesions. The nasolabial groove is also affected, but there are no comedones. What is the best initial treatment for the probable diagnosis?

      Your Answer: Topical metronidazole

      Explanation:

      For the treatment of mild to moderate acne rosacea, the most appropriate initial option is topical metronidazole. This patient, who presents with erythematous papules and pustules exacerbated by alcohol and telangiectasia, falls under this category. Oral tetracycline can be considered for severe or resistant cases, but it is not necessary for this patient. Oral doxycycline is a second-line treatment option for resistant cases, but it has potential adverse effects such as nausea, diarrhoea, oesophagitis, and increased photosensitivity. Oral isotretinoin and topical adapalene are not indicated for the management of rosacea symptoms and should be avoided. Topical hydrocortisone can even worsen rosacea symptoms and should not be used.

      Understanding Rosacea: Symptoms and Management

      Rosacea, also known as acne rosacea, is a chronic skin condition that has no known cause. It typically affects the nose, cheeks, and forehead, and the first symptom is often flushing. Over time, telangiectasia (visible blood vessels) may appear, followed by persistent redness with papules and pustules. In some cases, rhinophyma (enlarged nose) may develop, and there may be ocular involvement, such as blepharitis. Sunlight can exacerbate symptoms.

      Mild cases of rosacea may be treated with topical metronidazole, while topical brimonidine gel may be used for patients with predominant flushing but limited telangiectasia. More severe cases may require systemic antibiotics like oxytetracycline. Patients are advised to apply high-factor sunscreen daily and use camouflage creams to conceal redness. Laser therapy may be appropriate for those with prominent telangiectasia, and patients with rhinophyma should be referred to a dermatologist.

      Overall, understanding the symptoms and management of rosacea can help individuals manage their condition and improve their quality of life.

    • This question is part of the following fields:

      • Dermatology
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  • Question 8 - A 21-year-old woman presents with a two day history of increasing dysuria. During...

    Correct

    • A 21-year-old woman presents with a two day history of increasing dysuria. During examination, inflamed blisters are observed on the outer labia.
      What is the most suitable treatment option?

      Your Answer: Aciclovir

      Explanation:

      Understanding Genital Herpes and Treatment Options

      Genital herpes is a sexually transmitted infection caused by the herpes simplex viruses (HSV-1 or HSV-2). It presents as clusters of papules and vesicles on the outer genitals in both men and women, usually appearing 4-7 days after sexual exposure to HSV for the first time. Unfortunately, there is no cure for genital herpes, but treatment with aciclovir can reduce the duration of symptoms. Other treatment options include antibiotics like azithromycin and clindamycin for bacterial infections, antifungal agents like fluconazole for fungal infections, and metronidazole for anaerobic bacteria and protozoa. It is important to seek medical attention and start treatment as soon as possible to manage symptoms and prevent transmission to others.

    • This question is part of the following fields:

      • Dermatology
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  • Question 9 - A 75-year-old woman visits her general practitioner with a complaint of itchy white...

    Correct

    • A 75-year-old woman visits her general practitioner with a complaint of itchy white plaques on her vulva and inner thigh. She denies experiencing any vaginal discharge or bleeding. What is the probable diagnosis?

      Your Answer: Lichen sclerosus

      Explanation:

      Lichen sclerosus is a condition characterized by itchy white spots that are commonly observed on the vulva of older women. While candida can also cause itching and white patches, it would not result in lesions appearing on the inner thigh as well.

      Understanding Lichen Sclerosus

      Lichen sclerosus, previously known as lichen sclerosus et atrophicus, is an inflammatory condition that commonly affects the genitalia, particularly in elderly females. This condition leads to the atrophy of the epidermis, resulting in the formation of white plaques. The most prominent feature of lichen sclerosus is the presence of white patches that may scar. Patients may also experience itching and pain during intercourse or urination.

      Diagnosis of lichen sclerosus is usually made based on clinical examination, but a biopsy may be performed if atypical features are present. Management of this condition involves the use of topical steroids and emollients. Patients with lichen sclerosus are at an increased risk of developing vulval cancer, and routine follow-up is necessary to monitor for any changes.

      The Royal College of Obstetricians and Gynaecologists advise against performing a skin biopsy if a diagnosis can be made on clinical examination. However, a biopsy may be necessary if the patient fails to respond to treatment or if there is a suspicion of neoplastic change. The British Association of Dermatologists also recommends a biopsy if there are atypical features or diagnostic uncertainty. Patients under routine follow-up will need a biopsy if there is a suspicion of neoplastic change, if the disease fails to respond to treatment, if there is extragenital lichen sclerosus, or if second-line therapy is to be used.

      Understanding lichen sclerosus is important for early diagnosis and management of this condition. Patients with this condition should seek medical attention if they experience any symptoms or changes in their condition.

    • This question is part of the following fields:

      • Dermatology
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  • Question 10 - A 63-year-old woman presents to her General Practitioner concerned about a lesion to...

    Correct

    • A 63-year-old woman presents to her General Practitioner concerned about a lesion to her right temple. It has been there for several months. Examination reveals a round lesion, 1 cm in diameter, with rolled edges and a pearly appearance.
      Which of the following, from the history, is the most likely diagnosis?
      Select the SINGLE most likely diagnosis from the list below. Select ONE option only.

      Your Answer: Basal cell carcinoma (BCC)

      Explanation:

      Skin cancer can take on different forms, including basal cell carcinoma (BCC), actinic keratosis, herpes zoster infection, melanoma, and squamous cell carcinoma (SCC). BCCs can appear on any part of the body and often produce a bloody crust. AKs are scaly or hyperkeratotic lesions that can become malignant and are common in individuals over 60 years old. Herpes zoster infection causes a rash that is usually unilateral and follows a dermatomal distribution. Melanoma is a malignant tumour that arises from cutaneous melanocytes and can take on different types. SCC is the second most common type of skin cancer and arises from the keratinocytes of the epidermis. It predominantly affects sun-exposed sites and has a firm, indurated appearance with surrounding inflammation. BCCs are commonly found in sun-exposed areas and have a pearly appearance with rolled edges and surrounding telangiectasia. Management for skin cancer varies depending on the type and severity, but removal through curettage or excision is common for BCCs.

    • This question is part of the following fields:

      • Dermatology
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  • Question 11 - You are examining a 7-month-old infant who has a capillary haemangioma located on...

    Correct

    • You are examining a 7-month-old infant who has a capillary haemangioma located on the right cheek that is beginning to interfere with their vision. Following a conversation with the parents, you have decided to initiate treatment for this area due to the potential impact on eyesight.

      What is the primary treatment option for capillary haemangioma?

      Your Answer: Propranolol

      Explanation:

      When it comes to capillary haemangiomas that require intervention, the preferred treatment is propranolol. Other options include laser therapy or systemic steroids, but topical steroids are unlikely to be effective. Surgery is generally not recommended for most cases.

      Understanding Strawberry Naevus

      Strawberry naevus, also known as capillary haemangioma, is a type of skin condition that usually develops in infants within the first month of life. It is characterized by raised, erythematous, and multilobed tumours that commonly appear on the face, scalp, and back. While it is not present at birth, it can grow rapidly and reach its peak size at around 6-9 months before regressing over the next few years. In fact, around 95% of cases resolve before the child reaches 10 years of age. However, there are potential complications that may arise, such as obstructing visual fields or airway, bleeding, ulceration, and thrombocytopaenia.

      Capillary haemangiomas are more common in white infants, particularly in female and premature infants, as well as those whose mothers have undergone chorionic villous sampling. In cases where treatment is necessary, propranolol is now the preferred choice over systemic steroids. Topical beta-blockers like timolol may also be used. It is important to note that there is a deeper type of capillary haemangioma called cavernous haemangioma. Understanding the nature of strawberry naevus is crucial in managing its potential complications and providing appropriate treatment.

    • This question is part of the following fields:

      • Dermatology
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  • Question 12 - A 35-year-old man presents to his General Practitioner (GP) with concerns about a...

    Correct

    • A 35-year-old man presents to his General Practitioner (GP) with concerns about a mole on his leg. He has noticed over the past few months that it has increased in size. On examination, the mole is 7 mm in diameter and has an irregular border but is a consistent colour.
      What is the most appropriate management option for this patient?

      Your Answer: 2-week wait referral to dermatology

      Explanation:

      Understanding Referral Guidelines for Suspicious Pigmented Lesions

      When assessing pigmented lesions, the National Institute of Health and Care Excellence (NICE) recommends using the 7-point scoring system.
      The 7-point checklist includes:
      Major features (2 points each):
      change in size
      irregular shape or border
      irregular colour.
      Minor features (1 point each):
      > 7 mm at greatest diameter
      inflammation
      oozing or crusting
      change in sensation including itch.

      Lesions scoring 3 or more or with other suspicious features of melanoma should be referred urgently via the cancer fast-track pathway to dermatology.

      For lesions with a low suspicion of melanoma, a photo should be taken with a ruler and the patient advised to return in eight weeks for review. However, lesions scoring 5 on the checklist, like those with a change in size, irregular shape or border, and irregular color, should be referred urgently to a dermatologist to avoid any delay in diagnosis and subsequent treatment.

      Excision of lesions suspicious of melanoma should be avoided in primary care as this can delay treatment, and incomplete excision is more common. Routine referral to dermatology would be suitable for a pigmented lesion which scores less than 3 on the 7-point checklist if there are no other features to suggest melanoma. Referral to genetics is recommended if three or more family members have been diagnosed with melanoma.

      It is important to understand these referral guidelines to ensure timely and appropriate management of suspicious pigmented lesions.

    • This question is part of the following fields:

      • Dermatology
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  • Question 13 - Which of the following characteristics is least commonly associated with rosacea? ...

    Incorrect

    • Which of the following characteristics is least commonly associated with rosacea?

      Your Answer: Blepharitis

      Correct Answer: Pruritus

      Explanation:

      It is uncommon for pruritus to be present in cases of acne rosacea.

      Understanding Rosacea: Symptoms and Management

      Rosacea, also known as acne rosacea, is a chronic skin condition that has no known cause. It typically affects the nose, cheeks, and forehead, and the first symptom is often flushing. Over time, telangiectasia (visible blood vessels) may appear, followed by persistent redness with papules and pustules. In some cases, rhinophyma (enlarged nose) may develop, and there may be ocular involvement, such as blepharitis. Sunlight can exacerbate symptoms.

      Mild cases of rosacea may be treated with topical metronidazole, while topical brimonidine gel may be used for patients with predominant flushing but limited telangiectasia. More severe cases may require systemic antibiotics like oxytetracycline. Patients are advised to apply high-factor sunscreen daily and use camouflage creams to conceal redness. Laser therapy may be appropriate for those with prominent telangiectasia, and patients with rhinophyma should be referred to a dermatologist.

      Overall, understanding the symptoms and management of rosacea can help individuals manage their condition and improve their quality of life.

    • This question is part of the following fields:

      • Dermatology
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  • Question 14 - A 28-year-old man presents to the emergency department with complaints of severe pain...

    Incorrect

    • A 28-year-old man presents to the emergency department with complaints of severe pain in his perineum and scrotum. He has type 2 diabetes that is currently well managed with dapagliflozin. Upon examination, a purple rash with bullae is observed covering the entire perineum and extending up the scrotum. The patient reports intense pain, but reduced sensation is noted upon palpation of the rash. Vital signs are as follows: BP 110/90 mmHg, heart rate 109bpm, respiration rate 21/minute, temperature 38.1ºC, and oxygen saturation 98% on room air. What is the likely diagnosis?

      Your Answer: Hidradenitis suppurativa

      Correct Answer: Necrotizing fasciitis

      Explanation:

      The patient’s symptoms are consistent with necrotizing fasciitis, which often affects the perineum. The patient is experiencing severe pain, which may be causing his fever and rapid heart and breathing rates. As a type 2 diabetic taking dapagliflozin, an SGLT-2 inhibitor, his risk of developing necrotizing fasciitis is increased. While cellulitis can have similar symptoms in the early stages, the presence of bullae, purple discoloration, and severe pain in a patient with risk factors for necrotizing fasciitis make it less likely. Septic arthritis is not a likely diagnosis as it affects joint spaces, which is not the case in this patient. Pyoderma gangrenosum, which is associated with inflammatory conditions, is not a likely diagnosis as the rash is not ulcerated and the patient has no history of inflammatory bowel disease or rheumatoid arthritis.

      Understanding Necrotising Fasciitis

      Necrotising fasciitis is a serious medical emergency that can be difficult to identify in its early stages. It can be classified into two types based on the causative organism. Type 1 is the most common and is caused by mixed anaerobes and aerobes, often occurring post-surgery in diabetics. Type 2 is caused by Streptococcus pyogenes. There are several risk factors associated with necrotising fasciitis, including recent trauma, burns, or soft tissue infections, diabetes mellitus, intravenous drug use, and immunosuppression. The most commonly affected site is the perineum, also known as Fournier’s gangrene.

      The features of necrotising fasciitis include an acute onset, pain, swelling, and erythema at the affected site. It often presents as rapidly worsening cellulitis with pain that is out of keeping with physical features. The infected tissue is extremely tender and may have hypoaesthesia to light touch. Late signs include skin necrosis and crepitus/gas gangrene. Fever and tachycardia may be absent or occur late in the presentation.

      Management of necrotising fasciitis requires urgent surgical referral for debridement and intravenous antibiotics. The prognosis for this condition is poor, with an average mortality rate of 20%. It is important to be aware of the risk factors and features of necrotising fasciitis to ensure prompt diagnosis and treatment.

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      • Dermatology
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  • Question 15 - A 20-year-old individual comes in with a 1 cm golden, crusted lesion on...

    Correct

    • A 20-year-old individual comes in with a 1 cm golden, crusted lesion on the border of their left lower lip. They have previously tried topical hydrogen peroxide for a similar episode without success. What is the best course of action for management?

      Your Answer: Topical fusidic acid

      Explanation:

      If hydrogen peroxide is not appropriate, topical fusidic acid can be used for impetigo.

      Understanding Impetigo: Causes, Symptoms, and Management

      Impetigo is a common bacterial skin infection that affects both children and adults. It is caused by either Staphylococcus aureus or Streptococcus pyogenes and can develop anywhere on the body, but lesions tend to occur on the face, flexures, and limbs not covered by clothing. The infection can be a primary infection or a complication of an existing skin condition such as eczema, scabies, or insect bites. Impetigo is highly contagious and can spread through direct contact with discharges from the scabs of an infected person or indirectly through toys, clothing, equipment, and the environment.

      The symptoms of impetigo include ‘golden’, crusted skin lesions typically found around the mouth. The infection can be managed with limited, localized disease by using hydrogen peroxide 1% cream or topical antibiotic creams such as fusidic acid or mupirocin. However, if the disease is extensive, oral flucloxacillin or oral erythromycin may be prescribed. It is important to note that MRSA is not susceptible to either fusidic acid or retapamulin, so topical mupirocin should be used in this situation.

      Children with impetigo should be excluded from school until the lesions are crusted and healed or 48 hours after commencing antibiotic treatment. It is also important to practice good hygiene, such as washing hands regularly and avoiding close contact with infected individuals, to prevent the spread of impetigo. By understanding the causes, symptoms, and management of impetigo, individuals can take steps to prevent and treat this common bacterial skin infection.

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      • Dermatology
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  • Question 16 - A 21-year-old woman presents with a rash on her trunk that developed a...

    Correct

    • A 21-year-old woman presents with a rash on her trunk that developed a few weeks after a sore throat. On examination, small, drop-shaped, salmon-pink plaques are observed. What is the most probable cause of this rash?

      Your Answer: Guttate psoriasis

      Explanation:

      Understanding Different Skin Conditions: Guttate Psoriasis, Dermatitis, Hand, Foot and Mouth Disease, Pityriasis Rosea, and Pustular Psoriasis

      Skin conditions can be uncomfortable and sometimes even painful. Here are some common skin conditions and their characteristics:

      Guttate psoriasis is a type of psoriasis that causes small, drop-shaped plaques on the chest, arms, legs, and scalp. It is usually caused by a streptococcal infection and can last for up to three months. Topical agents, such as steroids or calcipotriol, can be used to treat it.

      Dermatitis, also known as eczema, results in rough patches of skin that are dry and itchy, particularly with exposure to irritants. In children and adults with long-standing disease, eczema is often localised to the flexure of the limbs.

      Hand, foot and mouth disease (HFMD) is an acute viral illness characterised by vesicular eruptions in the mouth and papulovesicular lesions of the distal limbs. It should not be confused with foot and mouth disease of animals, which is caused by a different virus.

      Pityriasis rosea is a skin rash that is characterised by distinctive, scaly, erythematous lesions. It is thought to be a reaction to exposure to infection.

      Pustular psoriasis is a rarer type of psoriasis that causes pus-filled blisters (pustules) to appear on your skin. Different types of pustular psoriasis affect different parts of the body.

      It is important to consult a healthcare professional for proper diagnosis and treatment of any skin condition.

    • This question is part of the following fields:

      • Dermatology
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  • Question 17 - A 25-year-old man comes to his General Practitioner complaining of an itchy rash...

    Correct

    • A 25-year-old man comes to his General Practitioner complaining of an itchy rash on both his wrists that has been present for 1 week. Upon examination, the doctor notes small purplish papules on the flexural aspect of both wrists with a flat top and small white lines on the surface. The patient also has areas of hyperpigmentation on the inner aspect of his elbows. What is the most probable diagnosis?

      Your Answer: Lichen planus

      Explanation:

      The patient’s symptoms and medical history suggest a diagnosis of lichen planus, a skin condition with an unknown cause that is likely immune-mediated. The rash is typically itchy and appears as papules with a shiny, purplish color in areas such as the palms, soles, genitalia, and flexor surfaces of the arms. The rash often has a polygonal shape and may have white lines known as Wickham’s striae. Over time, the papules flatten and are replaced by hyperpigmentation. Oral involvement is common, with a white-lace pattern on the buccal mucosa. Management usually involves topical steroids, but more severe cases may require oral steroids or immunosuppressants. Atopic eczema, irritant eczema, molluscum contagiosum, and psoriasis are different skin conditions that do not fit the patient’s symptoms.

    • This question is part of the following fields:

      • Dermatology
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  • Question 18 - A 25-year-old Asian woman presents with completely depigmented patches of skin on her...

    Correct

    • A 25-year-old Asian woman presents with completely depigmented patches of skin on her arms and legs.
      What is the most likely diagnosis?

      Your Answer: Vitiligo

      Explanation:

      Common Skin Pigmentation Disorders

      Skin pigmentation disorders are conditions that affect the color of the skin. Here are some of the most common ones:

      Vitiligo: This rare condition is believed to be caused by the immune system attacking melanocytes, resulting in patches of skin with no pigment. It is more common in people of African descent.

      Albinism: This genetic disorder reduces the activity of tyrosinase in melanocytes, resulting in a complete lack of pigment in the skin, hair, and eyes.

      Melanoma: This is a type of skin cancer that develops from melanocytes. It is characterized by irregular, highly pigmented moles.

      Melasma: This condition causes increased pigmentation, usually under the eyes. It is common in pregnant women and users of oral contraceptives.

      Pityriasis alba: This condition causes white, scaly patches on the face, and is most commonly seen in children.

      Understanding these skin pigmentation disorders can help individuals identify and manage them effectively.

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      • Dermatology
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  • Question 19 - A 25-year-old female with a past medical history of anorexia nervosa complains of...

    Incorrect

    • A 25-year-old female with a past medical history of anorexia nervosa complains of red crusted lesions located at the corners of her mouth and below her lower lip. What nutrient deficiency is she most likely experiencing?

      Your Answer: Thiamine

      Correct Answer: Zinc

      Explanation:

      Angular cheilitis can also be caused by a lack of vitamin B2 (riboflavin).

      Understanding Zinc Deficiency and Acrodermatitis Enteropathica

      Zinc deficiency is a condition that can lead to a range of symptoms, including acrodermatitis, which is characterized by red, crusted lesions that appear in an acral distribution, peri-orificial, perianal, and alopecia. Other symptoms of zinc deficiency include short stature, hypogonadism, hepatosplenomegaly, geophagia (ingesting clay/soil), cognitive impairment, and more.

      One specific type of zinc deficiency is known as acrodermatitis enteropathica, which is a recessively inherited partial defect in intestinal zinc absorption. This condition can lead to a range of symptoms, including the characteristic skin lesions, as well as other physical and cognitive impairments. It is important to recognize the signs of zinc deficiency and seek appropriate treatment to prevent further complications. With proper management, individuals with zinc deficiency can lead healthy and fulfilling lives.

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      • Dermatology
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  • Question 20 - A 32-year-old patient with a history of psoriasis complains of redness in the...

    Correct

    • A 32-year-old patient with a history of psoriasis complains of redness in the groin and genital region, as well as in the axilla. The patient has previously mentioned a distaste for creams that are messy or difficult to use. What is the best course of treatment?

      Your Answer: Topical steroid

      Explanation:

      Topical steroids are effective in treating flexural psoriasis in this patient.

      NICE recommends a step-wise approach for chronic plaque psoriasis, starting with regular emollients and then using a potent corticosteroid and vitamin D analogue separately, followed by a vitamin D analogue twice daily, and then a potent corticosteroid or coal tar preparation if there is no improvement. Phototherapy, systemic therapy, and topical treatments are also options for management. Topical steroids should be used cautiously and vitamin D analogues may be used long-term. Dithranol and coal tar have adverse effects but can be effective.

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      • Dermatology
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  • Question 21 - A 16-year-old high school student visits his doctor because he is struggling with...

    Incorrect

    • A 16-year-old high school student visits his doctor because he is struggling with his self-esteem due to skin problems. During the examination, you observe multiple open and closed comedones mainly on his chin and cheeks. He also reports experiencing painful papules on his back. About six weeks ago, your colleague prescribed him topical benzoyl peroxide and topical fusidic acid, but he feels that they have not been effective. He has no medical history and is not taking any other medications. What is the most suitable treatment to initiate?

      Your Answer: Referral for oral isotretinoin

      Correct Answer: Oral oxytetracycline

      Explanation:

      Acne vulgaris is a common skin condition that typically affects adolescents, with the face, neck, and upper trunk being the most commonly affected areas. It is characterized by the obstruction of hair follicles with keratin plugs, leading to the formation of comedones, inflammation, and pustules. The severity of acne can be classified as mild, moderate, or severe, depending on the presence and extent of inflammatory lesions, papules, and pustules.

      The management of acne vulgaris typically involves a step-up approach, starting with single topical therapy such as topical retinoids or benzoyl peroxide. If this is not effective, topical combination therapy may be used, which includes a topical antibiotic, benzoyl peroxide, and topical retinoid. Oral antibiotics such as tetracyclines may also be prescribed, but they should be avoided in pregnant or breastfeeding women and children under 12 years of age. Erythromycin may be used in pregnancy, while minocycline is now considered less appropriate due to the possibility of irreversible pigmentation. Oral antibiotics should be used for a maximum of three months and always co-prescribed with a topical retinoid or benzoyl peroxide to reduce the risk of antibiotic resistance.

      Combined oral contraceptives (COCP) are an alternative to oral antibiotics in women, and Dianette (co-cyrindiol) may be used as it has anti-androgen properties. However, it has an increased risk of venous thromboembolism compared to other COCPs, so it should generally be used second-line and for only three months. Oral isotretinoin is a potent medication that should only be used under specialist supervision, and it is contraindicated in pregnancy. Finally, there is no evidence to support dietary modification in the management of acne vulgaris.

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      • Dermatology
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  • Question 22 - You are examining a 65-year-old individual with acanthosis nigricans. You suggest screening for...

    Correct

    • You are examining a 65-year-old individual with acanthosis nigricans. You suggest screening for diabetes. Due to the widespread skin alterations, including some oral changes, what other potential underlying condition should be taken into account?

      Your Answer: Internal malignancy

      Explanation:

      While acanthosis nigricans may occur on its own in individuals with dark skin, it is typically a sign of insulin resistance and associated conditions such as type 2 diabetes, polycystic ovarian syndrome, Cushing’s syndrome, and hypothyroidism. Certain medications, including corticosteroids, insulin, and hormone medications, can also cause this condition. If acanthosis nigricans appears suddenly and in unusual areas such as the mouth, it may indicate the presence of an internal malignancy, particularly gastric cancer.

      Acanthosis nigricans is a condition characterized by the presence of symmetrical, brown, velvety plaques on the neck, axilla, and groin. This condition can be caused by various factors such as type 2 diabetes mellitus, gastrointestinal cancer, obesity, polycystic ovarian syndrome, acromegaly, Cushing’s disease, hypothyroidism, familial factors, Prader-Willi syndrome, and certain drugs like the combined oral contraceptive pill and nicotinic acid. The pathophysiology of acanthosis nigricans involves insulin resistance, which leads to hyperinsulinemia. This, in turn, stimulates the proliferation of keratinocytes and dermal fibroblasts through interaction with insulin-like growth factor receptor-1 (IGFR1).

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      • Dermatology
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  • Question 23 - A 38-year-old male presents to his GP with a raised, patchy rash on...

    Correct

    • A 38-year-old male presents to his GP with a raised, patchy rash on his elbows and knees. The lesions have slowly developed over the past few months and are itchy but not painful. He mentions that the rash improved slightly during his recent trip to Morocco and he got temporary relief from the itch.

      Upon examination, you observe well-demarcated, red, scaly patches on his elbow and both knees. The patient has a medical history of ankylosing spondylitis and is currently taking naproxen and omeprazole.

      What is the most appropriate treatment for this patient's rash?

      Your Answer: Topical betamethasone + topical calcipotriol

      Explanation:

      NICE recommends a step-wise approach for chronic plaque psoriasis, starting with regular emollients and then using a potent corticosteroid and vitamin D analogue separately, followed by a vitamin D analogue twice daily, and then a potent corticosteroid or coal tar preparation if there is no improvement. Phototherapy, systemic therapy, and topical treatments are also options for management. Topical steroids should be used cautiously and vitamin D analogues may be used long-term. Dithranol and coal tar have adverse effects but can be effective.

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      • Dermatology
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  • Question 24 - A 28-year-old woman with a history of thyroid disorder presents to the clinic...

    Correct

    • A 28-year-old woman with a history of thyroid disorder presents to the clinic with concerns about darkened skin on her neck.
      Which of the following is the most probable cause?

      Your Answer: Acanthosis nigricans

      Explanation:

      Common Skin Conditions: A Brief Overview

      Acanthosis Nigricans: A condition characterized by darkened patches of thickened skin, often described as velvet-like. It is usually benign but can sometimes be associated with underlying autoimmune conditions or gastric cancer.

      Dermatitis: Inflammation of the skin that can cause blistering, oozing, crusting, or flaking. Examples include eczema, dandruff, and rashes caused by contact with certain substances.

      Hidradenitis Suppurativa: A chronic condition that affects the apocrine glands in skin folds, causing painful nodules that can develop into pustules and eventually rupture. Scarring is common.

      Intertrigo: An inflammatory condition of skin folds caused by friction, often leading to secondary bacterial or fungal infections. Commonly found in the groin, axillae, and inframammary folds.

      Cowden’s Syndrome: An autosomal dominant condition characterized by hair follicle tumors, a cobblestone appearance of the oral epithelium, oral papillomas, and multiple skin tags. Associated with a high incidence of breast, thyroid, and gastrointestinal cancers.

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      • Dermatology
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  • Question 25 - You see a 4-year-old child in surgery with his mother. He has been...

    Incorrect

    • You see a 4-year-old child in surgery with his mother. He has been diagnosed with molluscum contagiosum and she is keen to have him treated.
      Which of the following statements about molluscum contagiosum is true?

      Your Answer: Patients may treat themselves by squeezing the spots with no adverse effects

      Correct Answer: The condition resolves spontaneously

      Explanation:

      Molluscum Contagiosum: Myths and Facts

      Molluscum contagiosum is a common skin infection caused by a poxvirus. However, there are several myths surrounding this condition that need to be debunked. Firstly, it is not true that the condition resolves spontaneously. While most cases do clear up on their own within 6-9 months, some can last up to 4 years. Secondly, molluscum contagiosum is highly infectious and can be transmitted through contact with infected persons or objects, including swimming pools. Sexual transmission is also possible.

      Another myth is that patients can treat themselves by squeezing the spots. This is not recommended as it can lead to scarring. Additionally, molluscum contagiosum is not limited to children. While it does present mainly in young children, there is also a later peak in young adults, some of which is attributable to sexual transmission.

      Finally, piercing the lesions with an orange stick dipped in phenol is not the treatment of choice. In fact, the condition usually requires no treatment and resolves on its own. Treatment may be recommended for adults or older children with particularly unsightly spots or in the immunosuppressed, where it can take several years to resolve. Topical applications such as benzyl peroxide or potassium hydroxide, as well as curettage and cryotherapy, can be used to treat the condition.

      In conclusion, it is important to separate fact from fiction when it comes to molluscum contagiosum. While it is a common and often harmless condition, it is important to seek medical advice if you have concerns or if the spots are causing discomfort or affecting your quality of life.

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      • Dermatology
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  • Question 26 - A 16-year-old boy presents to you with complaints of excessive sweating in his...

    Correct

    • A 16-year-old boy presents to you with complaints of excessive sweating in his hands. He reports feeling embarrassed in social situations, particularly when he has to shake hands with someone. He is also concerned about how this may impact his upcoming A-level exams.

      Which of the following is the most appropriate initial management approach for this condition?

      Your Answer: Aluminium chloride

      Explanation:

      Hyperhidrosis is not treated with beta blockers like propranolol or calcium channel blockers like nifedipine.

      Hyperhidrosis is a condition characterized by the excessive production of sweat. To manage this condition, there are several options available. The first-line treatment is the use of topical aluminium chloride preparations, although it may cause skin irritation as a side effect. Iontophoresis is another option that is particularly useful for patients with palmar, plantar, and axillary hyperhidrosis. Botulinum toxin is also licensed for axillary symptoms. Surgery, such as Endoscopic transthoracic sympathectomy, is another option, but patients should be informed of the risk of compensatory sweating. Overall, there are various management options available for hyperhidrosis, and patients should discuss with their healthcare provider to determine the best course of action.

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      • Dermatology
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  • Question 27 - A 28-year-old woman presents with a recurring, intensely itchy rash on the palms...

    Correct

    • A 28-year-old woman presents with a recurring, intensely itchy rash on the palms of her hands. She reports that these rashes tend to occur every summer. Despite trying over-the-counter emollients and antihistamines, there has been only marginal improvement. The patient is otherwise healthy with no other medical conditions and does not smoke.

      During examination, bilateral vesicles are observed on the palms and sides of the fingers. The palms appear dry with areas of skin peeling, while the rest of her body is unaffected.

      What is the most probable diagnosis?

      Your Answer: Pompholyx eczema

      Explanation:

      Palmoplantar pustulosis is often accompanied by psoriasis on other areas of the body and is strongly linked to smoking. Unlike pompholyx eczema, the connection to high temperatures and humidity is not as significant. Scabies, which is caused by the parasite Sarcoptes scabiei, results in severe itching of the hands and web spaces but is typically not a recurring issue. Symptoms include linear burrows and erythematous papules rather than vesicles.

      Understanding Pompholyx Eczema

      Pompholyx eczema, also known as dyshidrotic eczema, is a type of skin condition that affects both the hands and feet. It is often triggered by high temperatures and humidity, such as sweating. The main symptom of pompholyx eczema is the appearance of small blisters on the palms and soles, which can be intensely itchy and sometimes accompanied by a burning sensation. Once the blisters burst, the skin may become dry and crack.

      To manage pompholyx eczema, cool compresses and emollients can be used to soothe the affected areas. Topical steroids may also be prescribed to reduce inflammation and itching. It is important to avoid further irritation by wearing gloves or protective footwear and avoiding exposure to irritants. With proper management, the symptoms of pompholyx eczema can be controlled and minimized.

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      • Dermatology
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  • Question 28 - A 32-year-old woman presents with worries about hair loss. She reports experiencing hair...

    Incorrect

    • A 32-year-old woman presents with worries about hair loss. She reports experiencing hair loss in small patches on her scalp. During examination, you observe distinct patches of hair loss with some ‘broken exclamation mark’ hairs at the edges.

      What is the most probable diagnosis?

      Your Answer: Erosive pustular dermatosis of the scalp

      Correct Answer: Alopecia areata

      Explanation:

      Understanding Hair Loss: Causes and Symptoms

      Hair loss is a common concern for many individuals, causing anxiety and worry. There are various causes of hair loss, each with their own unique symptoms. Alopecia areata is a chronic inflammatory disease that affects the hair follicles, resulting in patchy, non-scarring hair loss on the scalp. Androgenic alopecia, on the other hand, is more common in men and causes a receding hairline and loss of hair from the top and front of the head. Fungal infections, such as tinea capitis, can also cause hair loss accompanied by scaling, itching, and pain. Scalp psoriasis can range from mild scaling to severe crusted plaques covering the entire scalp, while erosive pustular dermatosis of the scalp affects elderly individuals with scarring and yellow-brown crusts. It is important to understand the various causes and symptoms of hair loss in order to properly diagnose and treat the condition.

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      • Dermatology
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  • Question 29 - A 55-year-old man complains of persistent itching caused by shiny, flat-topped papules on...

    Correct

    • A 55-year-old man complains of persistent itching caused by shiny, flat-topped papules on the palmar aspect of his wrists. Lichen planus is suspected. What is the best course of treatment?

      Your Answer: Topical clobetasone butyrate

      Explanation:

      Understanding Lichen Planus

      Lichen planus is a skin condition that is believed to be caused by an immune response, although the exact cause is unknown. It is characterized by an itchy, papular rash that typically appears on the palms, soles, genitalia, and flexor surfaces of the arms. The rash often has a polygonal shape and a distinctive white-lines pattern on the surface, known as Wickham’s striae. In some cases, new skin lesions may appear at the site of trauma, a phenomenon known as the Koebner phenomenon.

      Oral involvement is common in around 50% of patients, with a white-lace pattern often appearing on the buccal mucosa. Nail changes may also occur, including thinning of the nail plate and longitudinal ridging. Lichenoid drug eruptions can be caused by certain medications, such as gold, quinine, and thiazides.

      The main treatment for lichen planus is potent topical steroids. For oral lichen planus, benzydamine mouthwash or spray is recommended. In more extensive cases, oral steroids or immunosuppression may be necessary.

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      • Dermatology
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  • Question 30 - A 72-year-old male presents to his primary care clinic with a 3-day history...

    Incorrect

    • A 72-year-old male presents to his primary care clinic with a 3-day history of burning pain and rash on the right side of his chest. He also complains of feeling generally unwell. He has no significant medical history and is not taking any regular medications.

      During the physical examination, an erythematous rash with multiple clear vesicles is observed on the right side of the torso. The remainder of the clinical examination, including an ophthalmic examination, is unremarkable.

      What is the most appropriate initial management for this patient's most likely diagnosis?

      Your Answer: Prescribe intravenous aciclovir

      Correct Answer: Prescribe oral famciclovir

      Explanation:

      Patients suspected of having shingles should receive antiviral treatment within 72 hours of symptom onset, according to NICE guidelines. Shingles is diagnosed based on the presence of dermatomal pain and a papular rash, with pain often persisting after the rash has resolved. The recommended first-line oral antivirals are famciclovir or valacyclovir, to be taken for 7 days. Aciclovir is a second-line option, as studies have shown that famciclovir and valacyclovir are more effective in reducing the risk of postherpetic pain. Prescribing calamine lotion and analgesia, as well as monitoring the patient, is not sufficient and does not replace antiviral treatment. Intravenous antivirals are only necessary if the patient cannot tolerate oral medication, and famciclovir cannot be administered intravenously.

      Shingles is a painful blistering rash caused by reactivation of the varicella-zoster virus. It is more common in older individuals and those with immunosuppressive conditions. The rash is well demarcated by the affected dermatome and may be accompanied by fever and lethargy. Treatment includes analgesia, antivirals, and potentially oral corticosteroids. Complications include post-herpetic neuralgia, ocular and ear complications. Antivirals should be used within 72 hours to reduce the risk of post-herpetic neuralgia.

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      • Dermatology
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