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Question 1
Correct
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A 40-year-old diabetic woman comes to the clinic with a fungal infection on her left big toenail. She is bothered by the appearance of the nail when wearing sandals, as the entire nail seems to be affected.
What is the best course of treatment for this patient?Your Answer: Oral fluconazole
Explanation:Effective Treatments for Fungal Nail Infections
According to clinical evidence, the most effective treatments for fungal nail infections are oral terbinafine and oral itraconazole. Topical treatments such as amorolfine and terbinafine have no good quality evidence to support their use, although topical ciclopirox may be effective. While various topical agents may be recommended for mild disease, oral treatment is usually required for a cure.
It is important to note that topical treatments should only be considered if less than eighty percent of the nail is involved, or there are two or less nails affected. In diabetics or those with vascular disease, fungal nail infections can be a portal for bacterial infection and subsequent cellulitis, making effective treatment crucial.
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This question is part of the following fields:
- Dermatology
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Question 2
Correct
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A 25-year-old woman is distressed about her acne vulgaris with papules, pustules and comedones. Her weight and periods are both normal. Identify the probable cause from the options provided.
Your Answer: Bacteria
Explanation:Understanding Acne in Women: Causes and Treatments
Acne is not just a teenage problem, especially for women. There are several factors that contribute to its development, including genetics, seborrhoea, sensitivity to androgen, P. acnes bacteria, blocked hair follicles, and immune system response. Polycystic ovarian syndrome is a less common cause of acne. Treatment options target these underlying causes, with combined oral contraceptives being a popular choice. Contrary to popular belief, diet and hygiene do not play a significant role in acne. The black color of blackheads is due to pigment in the hair follicle material. Understanding the causes and treatments of acne can help women manage this common skin condition.
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This question is part of the following fields:
- Dermatology
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Question 3
Correct
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A 26-year-old female patient visits her general practitioner with a concern about excessive hair growth on her arms. She has a slim build and olive skin with dark brown hair. The patient shaves the hair to remove it. Her menstrual cycles are regular, occurring every 33 days, and she reports no heavy bleeding or pain. What is the probable diagnosis?
Your Answer: Genetic phenotype
Explanation:Excessive hair growth on the arms may be noticeable in this woman due to her genetic makeup, as she has olive skin and dark hair. However, hirsutism, which is characterized by excessive hair growth on the face and body, is often associated with polycystic ovarian syndrome. Although her menstrual cycle is regular at 33 days, it is important to note that a normal cycle can range from 24 to 35 days. A cycle variation of 8 days or more is considered moderately irregular, while a variation of 21 days or more is considered very irregular. Additionally, this patient has light periods and a slim physique.
Understanding Hirsutism and Hypertrichosis
Hirsutism is a term used to describe excessive hair growth in women that is dependent on androgens, while hypertrichosis refers to hair growth that is not androgen-dependent. Polycystic ovarian syndrome is the most common cause of hirsutism, but other factors such as Cushing’s syndrome, obesity, and certain medications can also contribute to this condition. To assess hirsutism, the Ferriman-Gallwey scoring system is often used, which assigns scores to nine different body areas. Management of hirsutism may involve weight loss, cosmetic techniques, or the use of oral contraceptive pills or topical medications.
Hypertrichosis, on the other hand, can be caused by a variety of factors such as certain medications, congenital conditions, and even anorexia nervosa. It is important to identify the underlying cause of excessive hair growth in order to determine the most appropriate treatment approach. By understanding the differences between hirsutism and hypertrichosis, individuals can better manage these conditions and improve their quality of life.
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This question is part of the following fields:
- Dermatology
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Question 4
Correct
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A 25-year-old woman comes in for pre-employment evaluation as she is starting work as a nurse on a pediatric ward next month. She has received all her childhood and school-aged vaccinations but cannot recall if she had Chickenpox as a child.
What vaccine is most likely required before she can start her new job?Your Answer: Varicella vaccine
Explanation:For healthcare workers who do not have natural immunity to varicella, the most appropriate course of action is to administer a varicella vaccine. While a diphtheria, pertussis, and tetanus booster may be recommended by the employer, it is not necessary in this case as the patient has a history of vaccination. Hepatitis A vaccine is typically only given to those who travel and is not routinely required for employment. While an influenza vaccine may be suggested by the employer, the patient’s most pressing need is likely the varicella vaccine. While a measles, mumps, and rubella vaccination may be considered, it is not the most urgent vaccination needed for employment.
Varicella-Zoster Vaccination: Protection Against Chickenpox and Shingles
Varicella-zoster is a herpesvirus that causes Chickenpox and shingles. There are two types of vaccines available to protect against these infections. The first type is a live attenuated vaccine that prevents primary varicella infection or Chickenpox. This vaccine is recommended for healthcare workers who are not immune to VZV and for individuals who are in close contact with immunocompromised patients.
The second type of vaccine is designed to reduce the incidence of herpes zoster or shingles caused by reactivation of VZV. This live-attenuated vaccine is given subcutaneously and is offered to patients aged 70-79 years. The vaccine is also available as a catch-up campaign for those who missed out on their vaccinations in the previous two years of the program. However, the shingles vaccine is not available on the NHS to anyone aged 80 and over because it seems to be less effective in this age group.
The main contraindication for both vaccines is immunosuppression. Side effects of the vaccines include injection site reactions, and less than 1 in 10,000 individuals may develop Chickenpox. It is important to note that vaccination is the most effective way to prevent varicella-zoster infections and their complications.
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This question is part of the following fields:
- Dermatology
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Question 5
Correct
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A 15-year-old male with a history of asthma is brought in by his worried father due to the sudden appearance of a rash on his leg. The patient reports no new product usage or trauma. His father also expresses concerns about his recent lack of motivation in school.
Upon examination, there are distinct linear lesions forming geometric shapes on the left lower leg and dorsal aspect of the foot. The patient appears healthy, and there are no other notable findings.
What is the probable diagnosis?Your Answer: Dermatitis artefacta
Explanation:The sudden appearance of well-defined skin lesions in a linear pattern, accompanied by a lack of concern or emotional response, is indicative of dermatitis artefacta. This condition is often associated with self-inflicted injuries that stem from underlying psychological issues, such as deliberate self-harm or attention-seeking behavior. The lesions are typically geometric in shape and appear in easily accessible areas, such as the limbs or face. Patients with dermatitis artefacta may deny causing the lesions themselves. The patient’s declining grades may be linked to psychological difficulties that have led to this form of self-harm.
Understanding Dermatitis Artefacta
Dermatitis artefacta is a rare condition that affects individuals of any age, but is more common in females. It is characterised by self-inflicted skin lesions that patients typically deny are self-induced. The condition is strongly associated with personality disorder, dissociative disorders, and eating disorders, with a prevalence of up to 33% in patients with bulimia or anorexia.
Patients with dermatitis artefacta present with well-demarcated linear or geometric lesions that appear suddenly and do not evolve over time. The lesions may be caused by scratching with fingernails or other objects, burning skin with cigarettes, or chemical exposure. Commonly affected areas include the face and dorsum of the hands. Despite the severity of the skin lesions, patients may display a nonchalant attitude, known as la belle indifference.
Diagnosis of dermatitis artefacta is based on clinical history and exclusion of other dermatological conditions. Biopsy of skin lesions is not routine but may be helpful to exclude other conditions. Psychiatric assessment may be necessary. Differential diagnosis includes other dermatological conditions and factitious disorders such as Munchausen syndrome and malingering.
Management of dermatitis artefacta involves a multidisciplinary approach with dermatologists, psychologists, and psychiatrists. Direct confrontation is unhelpful and may discourage patients from seeking medical help. Treatment includes providing occlusive dressing, topical antibiotics, and bland emollients. Selective serotonin reuptake inhibitors and cognitive behavioural therapy may be helpful, although evidence is limited.
In summary, dermatitis artefacta is a rare condition that requires a multidisciplinary approach for management. Understanding the clinical features, risk factors, and differential diagnosis is crucial for accurate diagnosis and appropriate treatment.
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This question is part of the following fields:
- Dermatology
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Question 6
Correct
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A 45-year-old woman presents with a pigmented skin lesion on her back. She is uncertain how long it has been there due to its location. Her husband noticed it last week and urged her to get it checked as he could not recall seeing it before.
Upon examination, there is a firm nodular pigmented lesion measuring 5 mm in diameter. It is symmetrical and an evenly pigmented dark brown colour. The border is smooth and regular. When viewed in the context of the rest of the patient's back, it does appear to stand out and look different from the small number of clearly benign naevii that are also present.
You are uncertain about the diagnosis. What is the most appropriate course of action?Your Answer: Photograph the lesion and review the patient in 4 weeks time
Explanation:The ABCDEF Checklist for Assessing Suspicious Pigmented Lesions
The ABCDE checklist is a useful tool for assessing suspicious pigmented lesions, but it is important to also consider the additional ‘F’ criterion. The ABCDE criteria include asymmetry, irregular border, irregular colour, diameter greater than 6mm, and evolutionary change. However, even if a lesion doesn’t meet these criteria, it should still be considered suspicious if it looks different from the rest, the so-called ‘ugly duckling’ sign.
It is important to note that some dangerous melanomas may not be detected using the ABCDE criteria, as they can be symmetrical and evenly pigmented or non-pigmented. Therefore, the ‘F’ criterion should always be kept in mind and any suspicious lesions should be urgently referred to a dermatologist. It is also important to note that referral criteria may differ in different countries.
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This question is part of the following fields:
- Dermatology
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Question 7
Correct
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A 23-year-old man visits your clinic with a concern about spots on his face, neck, and trunk that have been present for a few months. Despite using an over-the-counter facial wash, the spots have not improved. The patient is becoming increasingly self-conscious about them and seeks treatment. Upon examination, you observe comedones and inflamed lesions on his face, as well as nodules, pustules, and scarring. The patient is in good health, with normal vital signs.
What is the most appropriate initial approach to managing this patient?Your Answer: Refer to dermatology
Explanation:A patient with severe acne, including scarring, hyperpigmentation, and widespread pustules, should be referred to a dermatologist for specialized treatment. In this case, the patient has nodules, pustules, and scarring, indicating the need for consideration of oral isotretinoin. A trial of low-strength topical benzoyl peroxide would not be appropriate for severe and widespread acne, but may be suitable for mild to moderate cases. Same-day hospital admission is unnecessary for a patient with normal observations and no other health concerns. A review in 2 months is not appropriate for severe acne, which should be managed with topical therapies, oral antibiotics, or referral to a dermatologist. Topical antibiotics are also not recommended for severe and widespread acne, and a dermatology referral is necessary for this patient with lesions on the face, neck, and trunk.
Acne vulgaris is a common skin condition that usually affects teenagers and is characterized by the obstruction of hair follicles with keratin plugs, resulting in comedones, inflammation, and pustules. The severity of acne can be classified as mild, moderate, or severe, depending on the number and type of lesions present. Treatment for acne typically involves a step-up approach, starting with single topical therapy and progressing to combination therapy or oral antibiotics if necessary. Tetracyclines are commonly used but should be avoided in certain populations, and a topical retinoid or benzoyl peroxide should always be co-prescribed to reduce the risk of antibiotic resistance. Combined oral contraceptives can also be used in women, and oral isotretinoin is reserved for severe cases under specialist supervision. Dietary modification has no role in the management of acne.
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This question is part of the following fields:
- Dermatology
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Question 8
Correct
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A father brings his 4-year-old daughter to your GP surgery. He has noticed that she has been scratching her face, particularly around her mouth and that she has developed some 'spots and scabs' in the area. The patient doesn't appear systemically unwell or distressed. The child has a history of atopic eczema and viral-induced wheeze.
On examination of the child's face you note the presence of pustules and vesicles surrounding the mouth and nose area along with some honey-coloured plaques. You diagnose impetigo and prescribe topical fusidic acid as well as advising good hygiene measures.
The father is concerned about sending the child to preschool. What do you advise?Your Answer: The patient must have been on treatment for 48h before returning to daycare
Explanation:Patients with impetigo can go back to school or work once they are no longer contagious, which is either when all lesions have crusted over or after 48 hours of starting treatment. For measles or rubella, it is recommended to wait for at least 4 days after the rash appears before returning to work or school.
Understanding Impetigo: Causes, Symptoms, and Management
Impetigo is a common bacterial skin infection that is caused by either Staphylococcus aureus or Streptococcus pyogenes. It can occur as a primary infection or as a complication of an existing skin condition such as eczema. Impetigo is most common in children, especially during warm weather. The infection can develop anywhere on the body, but it tends to occur on the face, flexures, and limbs not covered by clothing.
The infection spreads through direct contact with discharges from the scabs of an infected person. The bacteria invade the skin through minor abrasions and then spread to other sites by scratching. Infection is spread mainly by the hands, but indirect spread via toys, clothing, equipment, and the environment may occur. The incubation period is between 4 to 10 days.
Symptoms of impetigo include ‘golden’, crusted skin lesions typically found around the mouth. It is highly contagious, and children should be excluded from school until the lesions are crusted and healed or 48 hours after commencing antibiotic treatment.
Management of impetigo depends on the extent of the disease. Limited, localized disease can be treated with hydrogen peroxide 1% cream or topical antibiotic creams such as fusidic acid or mupirocin. MRSA is not susceptible to either fusidic acid or retapamulin, so topical mupirocin should be used in this situation. Extensive disease may require oral flucloxacillin or oral erythromycin if penicillin-allergic. The use of hydrogen peroxide 1% cream was recommended by NICE and Public Health England in 2020 to cut antibiotic resistance. The evidence base shows it is just as effective at treating non-bullous impetigo as a topical antibiotic.
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This question is part of the following fields:
- Dermatology
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Question 9
Correct
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An obese 57-year-old man presents with a discharge from under the foreskin and a sore penis. There are small, red erosions on the glans, and the foreskin is also swollen and red. He denies any recent sexual contact. He is otherwise fit and well and doesn't take any regular medications.
Which condition is most likely to have led to these signs and symptoms?Your Answer: Diabetes mellitus
Explanation:Causes of Balanitis and their Risk Factors
Balanitis is a condition characterized by inflammation of the glans penis. There are several causes of balanitis, and identifying the underlying cause is crucial for effective treatment. Here are some of the common causes of balanitis and their associated risk factors:
Diabetes Mellitus: Diabetes is the most common underlying condition associated with adult balanitis, especially if the blood sugar is poorly controlled. It predisposes the patient to a bacterial or candida infection. Obesity is also a risk factor for underlying diabetes.
Human Immunodeficiency Virus Infection: While immunosuppression (such as secondary to HIV infection) predisposes to balanitis, there are no indications that he is at risk of HIV.
Contact Dermatitis: Contact or irritant dermatitis is a cause of balanitis; however, there are no risk factors described. Common causes of contact dermatitis balanitis include condoms, soap, and poor hygiene.
Syphilis: Syphilis is a cause of infective balanitis; however, it is not the most common cause and is unlikely in a patient who denies recent sexual contact.
Trichomonas: Although a cause of infective balanitis, trichomonas is not the most common cause and is unlikely in a patient who denies recent sexual contact.
In conclusion, identifying the underlying cause of balanitis is crucial for effective treatment. Diabetes, HIV infection, contact dermatitis, syphilis, and trichomonas are some of the common causes of balanitis, and their associated risk factors should be considered during diagnosis.
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This question is part of the following fields:
- Dermatology
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Question 10
Incorrect
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Which of the following skin conditions is less frequently observed in individuals with systemic lupus erythematosus?
Your Answer: Livedo reticularis
Correct Answer: Keratoderma blenorrhagica
Explanation:Reiter’s syndrome is characterized by the presence of waxy yellow papules on the palms and soles, a condition known as keratoderma blenorrhagica.
Skin Disorders Associated with Systemic Lupus Erythematosus (SLE)
Systemic lupus erythematosus (SLE) is a chronic autoimmune disease that can affect various organs and tissues in the body, including the skin. Skin manifestations of SLE include a photosensitive butterfly rash, discoid lupus, alopecia, and livedo reticularis, which is a net-like rash. The butterfly rash is a red, flat or raised rash that appears on the cheeks and bridge of the nose, often sparing the nasolabial folds. Discoid lupus is a chronic, scarring skin condition that can cause red, raised patches or plaques on the face, scalp, and other areas of the body. Alopecia is hair loss that can occur on the scalp, eyebrows, and other areas of the body. Livedo reticularis is a mottled, purplish discoloration of the skin that can occur on the arms, legs, and trunk.
The skin manifestations of SLE can vary in severity and may come and go over time. They can also be a sign of more serious internal organ involvement. Treatment for skin manifestations of SLE may include topical or oral medications, such as corticosteroids, antimalarials, and immunosuppressants, as well as sun protection measures.
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This question is part of the following fields:
- Dermatology
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Question 11
Correct
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The community midwife has approached you regarding a patient she saw for her booking appointment that morning. The patient is a 22-year-old student who did not plan on becoming pregnant and is currently taking multiple prescribed medications. The midwife has requested that you review the medication list to determine if any of them need to be discontinued. The patient is taking levothyroxine for hypothyroidism, beclomethasone and salbutamol inhalers for asthma, adapalene gel for acne, and occasionally uses metoclopramide for migraines. She also purchases paracetamol over the counter for her migraines. She is believed to be approximately 8 weeks pregnant but is waiting for her dating scan.
Which of her medications, if any, should be stopped?Your Answer: Adapalene gel
Explanation:During pregnancy, it is not recommended to use topical or oral retinoids, including Adapalene gel, due to the risk of birth defects. Benzoyl peroxide can be considered as an alternative. Levothyroxine may need to be adjusted to meet the increased metabolic demands of pregnancy, and consultation with an endocrinologist may be necessary. beclomethasone inhaler should be continued to maintain good asthma control, unless there is a specific reason not to. Metoclopramide is generally considered safe during pregnancy and can be used if needed.
Acne vulgaris is a common skin condition that usually affects teenagers and is characterized by the obstruction of hair follicles with keratin plugs, resulting in comedones, inflammation, and pustules. The severity of acne can be classified as mild, moderate, or severe, depending on the number and type of lesions present. Treatment for acne typically involves a step-up approach, starting with single topical therapy and progressing to combination therapy or oral antibiotics if necessary. Tetracyclines are commonly used but should be avoided in certain populations, and a topical retinoid or benzoyl peroxide should always be co-prescribed to reduce the risk of antibiotic resistance. Combined oral contraceptives can also be used in women, and oral isotretinoin is reserved for severe cases under specialist supervision. Dietary modification has no role in the management of acne.
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This question is part of the following fields:
- Dermatology
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Question 12
Correct
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A 67-year-old woman comes to see her GP with concerns about some small spots on her shoulder. She reports seeing small lesions with several tiny blood vessels emanating from the center. During the examination, you can press on them, causing them to turn white and then refill from the middle.
What is the condition associated with this type of lesion?Your Answer: Liver failure
Explanation:When differentiating between spider naevi and telangiectasia, it is important to note that spider naevi fill from the centre when pressed, while telangiectasia fill from the edge. A woman presenting with a small lesion surrounded by tiny blood vessels radiating from the middle that refills from the centre is likely to have a spider naevus. This condition is commonly associated with liver failure, making it the most likely diagnosis.
Understanding Spider Naevi
Spider naevi, also known as spider angiomas, are characterized by a central red papule surrounded by capillaries. These lesions can be found on the upper part of the body and blanch upon pressure. Spider naevi are more common in childhood, with around 10-15% of people having one or more of these lesions.
To differentiate spider naevi from telangiectasia, one can press on the lesion and observe how it fills. Spider naevi fill from the center, while telangiectasia fills from the edge.
Spider naevi can also be associated with liver disease, pregnancy, and the use of combined oral contraceptive pills. It is important to understand the characteristics and associations of spider naevi for proper diagnosis and treatment.
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This question is part of the following fields:
- Dermatology
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Question 13
Correct
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A 28-year-old Afro-Caribbean woman presents with a complaint of a 'facial rash'. Upon examination, you note a blotchy, brownish pigmentation on both cheeks. She reports starting the combined oral contraceptive a few months ago and believes that her skin began to develop the pigmentation after starting the pill. What is the likely diagnosis?
Your Answer: Dermatomyositis
Explanation:Chloasma: A Common Skin Condition in Women
Chloasma, also known as melasma, is a skin condition characterized by brown pigmentation that typically develops across the cheeks. It is more common in women and in people with darker skin, and commonly presents between the ages of 30-40. Hormonal contraceptives, pregnancy, sun exposure, and certain cosmetics are well-documented triggers for developing the condition.
It is important to note that other conditions can cause facial rashes, but they would not fit into the description of chloasma. Acne rosacea causes papules and pustules, as well as facial flushing. Dermatomyositis causes a heliotrope rash across the face, eyelids, and light-exposed areas. Perioral dermatitis, also known as muzzle rash, causes papules that are usually seen around the mouth. Seborrhoeic dermatitis causes a scaling, flaky rash.
Overall, chloasma is a common skin condition that can be triggered by hormonal changes and sun exposure.
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This question is part of the following fields:
- Dermatology
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Question 14
Incorrect
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A 56-year-old man is prescribed topical fusidic acid for a small patch of impetigo on his chin. He has a history of heart disease and recently underwent a cardiac procedure. After seven days of treatment, there has been no improvement in his symptoms. On examination, a persistent small, crusted area is noted on the right side of his chin. While waiting for swab results, what is the best course of action?
Your Answer: Oral erythromycin
Correct Answer: Topical mupirocin
Explanation:In light of the recent hospitalization and the ineffectiveness of fusidic acid, it is important to consider the possibility of MRSA. The most suitable treatment option in this case would be topical mupirocin.
Understanding Impetigo: Causes, Symptoms, and Management
Impetigo is a common bacterial skin infection that is caused by either Staphylococcus aureus or Streptococcus pyogenes. It can occur as a primary infection or as a complication of an existing skin condition such as eczema. Impetigo is most common in children, especially during warm weather. The infection can develop anywhere on the body, but it tends to occur on the face, flexures, and limbs not covered by clothing.
The infection spreads through direct contact with discharges from the scabs of an infected person. The bacteria invade the skin through minor abrasions and then spread to other sites by scratching. Infection is spread mainly by the hands, but indirect spread via toys, clothing, equipment, and the environment may occur. The incubation period is between 4 to 10 days.
Symptoms of impetigo include ‘golden’, crusted skin lesions typically found around the mouth. It is highly contagious, and children should be excluded from school until the lesions are crusted and healed or 48 hours after commencing antibiotic treatment.
Management of impetigo depends on the extent of the disease. Limited, localized disease can be treated with hydrogen peroxide 1% cream or topical antibiotic creams such as fusidic acid or mupirocin. MRSA is not susceptible to either fusidic acid or retapamulin, so topical mupirocin should be used in this situation. Extensive disease may require oral flucloxacillin or oral erythromycin if penicillin-allergic. The use of hydrogen peroxide 1% cream was recommended by NICE and Public Health England in 2020 to cut antibiotic resistance. The evidence base shows it is just as effective at treating non-bullous impetigo as a topical antibiotic.
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This question is part of the following fields:
- Dermatology
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Question 15
Correct
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A 7-year-old boy is seen complaining of verrucas.
Which of the following statements about treatment of verrucas is correct?Your Answer: Untreated verrucas often resolve spontaneously
Explanation:Effective Treatments for Plantar Warts: A Guide
Plantar warts, also known as verrucas, are notoriously difficult to treat due to their thick cornified layer. This layer makes it harder for treatments to penetrate to the lower epidermis, resulting in lower cure rates compared to other skin warts. However, there are several effective treatments available.
First-line treatment for plantar warts is over-the-counter salicylic acid. While this treatment can turn the affected area white and cause soreness, it is often effective. Paring the wart before treatment may also help. Glutaraldehyde is another effective option, but it may turn the skin brown and cause sensitization.
Cryotherapy is a second-line treatment that involves freezing the wart with liquid nitrogen. However, multiple cycles may be needed for it to be effective. Reported cure rates vary widely.
For more aggressive treatment, salicylic acid and/or cryotherapy can be used with more intensive regimens. However, caution is needed as these treatments can have worse side effects.
Surgery and bleomycin are not typically used for plantar warts. Instead, the British Association of Dermatologists recommends several other treatments with some evidence base, including dithranol, 5-fluorouracil (5-FU), formaldehyde, laser, photodynamic therapy, topical immunotherapy, and podophyllotoxin.
In conclusion, while plantar warts can be challenging to treat, there are several effective options available. Consult with a healthcare professional to determine the best course of treatment for your individual case.
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This question is part of the following fields:
- Dermatology
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Question 16
Correct
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You saw a 9-year-old girl accompanied by her dad at the GP surgery with a one-day history of itchy rash on her ears. She is normally healthy and doesn't take any regular medication. On examination, you notice small blisters on the outer rims of her ear which causes mild discomfort on palpation. The rest of the skin appears normal. What is the most suitable initial treatment for this condition?
Your Answer: Emollient
Explanation:Emollients, potent topical steroids, and avoiding strong direct sunlight are effective treatments for juvenile spring eruption. Antihistamines can also be used to alleviate itching. Infection is not a known factor in this condition, which is associated with UV light exposure. In more severe cases or when there is widespread polymorphic light eruption, oral steroids and phototherapy may be necessary.
Understanding Juvenile Spring Eruption
Juvenile spring eruption is a skin condition that occurs as a result of sun exposure. It is a type of polymorphic light eruption (PLE) that causes itchy red bumps on the light-exposed parts of the ears, which can turn into blisters and crusts. This condition is more common in boys aged between 5-14 years, and it is less common in females due to increased amounts of hair covering the ears.
The main cause of juvenile spring eruption is sun-induced allergy rash, which is more likely to occur in the springtime. Some patients may also have PLE elsewhere on the body, and there is an increased incidence in cold weather. The diagnosis of this condition is usually made based on clinical presentation, and no clinical tests are required in most cases. However, in aggressive cases, lupus should be ruled out by ANA and ENA blood tests.
The management of juvenile spring eruption involves providing patient education on sun exposure and the use of sunscreen and hats. Topical treatments such as emollients or calamine lotion can be used to provide relief, and antihistamines can help with itch relief at night-time. In more serious cases, oral steroids such as prednisolone can be used, as well as immune-system suppressants.
In conclusion, understanding juvenile spring eruption is important for proper diagnosis and management. By taking preventative measures and seeking appropriate treatment, patients can manage their symptoms and improve their quality of life.
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This question is part of the following fields:
- Dermatology
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Question 17
Correct
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What is the most potent topical steroid used for treating dermatological conditions?
Your Answer: Locoid (hydrocortisone butyrate 0.1%)
Explanation:Topical Steroid Potencies: Understanding the Differences
Topical steroids are commonly used in general practice to treat various skin conditions. However, it is crucial to understand the relative potencies of these medications to prescribe them safely and effectively.
Dermovate is the most potent topical steroid, classified as very potent. Betnovate and hydrocortisone butyrate are both considered potent, while eumovate falls under the moderate potency category. Hydrocortisone 1% is classified as mild.
To gain a better understanding of topical steroid potencies, the British National Formulary provides a helpful overview. By knowing the differences between these medications, healthcare professionals can prescribe the appropriate treatment for their patients’ skin conditions.
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This question is part of the following fields:
- Dermatology
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Question 18
Correct
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A 54-year-old alcoholic man presents with a 5-month history of a painless non-healing ulcer on the underside of his penis. On examination, there is a 1 cm × 1 cm deep, ulcerated lesion of the ventral aspect of the glans penis on retraction of the foreskin. There is no associated discharge or lymphadenopathy.
What is the most likely diagnosis?Your Answer: Penile cancer
Explanation:Distinguishing Penile Cancer from Other Conditions
Penile cancer is characterized by a non-healing painless ulcer that persists for at least six months. The lesion may present as a lump, ulcer, erythematous lesion, or bleeding or discharge from a concealed lesion. The most common locations for tumors are the glans and prepuce. On the other hand, herpes simplex is recurrent and manifests as painful grouped vesicles that rupture, crust, and heal within ten days. Lymphogranuloma venereum (LGV) is a sexually transmitted disease caused by certain strains of Chlamydia trachomatis, which presents as a painless penile or anal papule or shallow ulcer/erosion and painful and swollen regional lymph glands. Poor hygiene may contribute to balanitis, which presents with painful sores and discharge. Finally, primary syphilis presents as a small, firm, red, painless papule that ulcerates and heals within 4-8 weeks without treatment, which is not consistent with the 4-month history and deep ulcerated lesion described in this case. Therefore, it is crucial to distinguish penile cancer from other conditions to ensure prompt and appropriate treatment.
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This question is part of the following fields:
- Dermatology
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Question 19
Correct
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A 50-year-old patient presents for follow-up after being discharged from the hospital. He complains of experiencing itchy, raised red bumps on his skin that appeared about 12 hours after taking his discharge medication for the first time. The symptoms have worsened over the past few days, and he has never experienced anything like this before. On examination, faint pink raised patches are observed on his trunk and upper arms.
Which medication is the most probable cause of the patient's symptoms?Your Answer: Aspirin
Explanation:Aspirin is the most likely cause of the patient’s urticaria, as it is a known trigger for this condition. Atorvastatin, bisoprolol, and metformin are not commonly associated with urticaria, although they may have other side effects.
Urticaria, also known as hives, can be caused by various drugs. Some of the most common drugs that can trigger urticaria include aspirin, penicillins, nonsteroidal anti-inflammatory drugs (NSAIDs), and opiates. These medications can cause an allergic reaction in some individuals, leading to the development of hives.
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This question is part of the following fields:
- Dermatology
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Question 20
Incorrect
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You encounter a 70-year-old man who is experiencing an issue with his penis. He has been unable to retract his foreskin for a few years now, and the tip of his penis is quite sore. He also reports a foul odor. Apart from this, he is in good health. He believes that this problem developed gradually over several years.
During the examination, you observe that the man is not circumcised, and there is a tight white ring around the tip of his foreskin. The glans penis is barely visible through the end of the foreskin, and it appears to be inflamed.
What is the specific condition responsible for causing this man's balanitis?Your Answer: Squamous cell carcinoma
Correct Answer: Lichen sclerosis
Explanation: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. It is characterized by the formation of white plaques that lead to atrophy of the epidermis. The condition can cause discomfort, with itch being a prominent symptom. Pain during intercourse or urination may also occur.
Diagnosis of lichen sclerosus is usually based on clinical examination, although a biopsy may be necessary if atypical features are present. Treatment typically involves the use of topical steroids and emollients. However, patients with lichen sclerosus are at an increased risk of developing vulval cancer, so regular follow-up is recommended.
According to the Royal College of Obstetricians and Gynaecologists, skin biopsy is not necessary for diagnosis unless the woman fails to respond to treatment or there is clinical suspicion of cancer. The British Association of Dermatologists also advises that biopsy is not always essential when the clinical features are typical, but it is advisable if there are atypical features or diagnostic uncertainty. Biopsy is mandatory if there is any suspicion of neoplastic change. 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 LS, if there are pigmented areas, or if second-line therapy is to be used.
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This question is part of the following fields:
- Dermatology
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