Managing Eczema in Infants

Eczema is a common skin condition in infants that can cause discomfort and distress. Cow’s milk allergy may trigger severe eczema, but switching to a soy-based formula may help alleviate symptoms. While complete cure may not be possible, appropriate preventative measures and topical preparations can minimize the condition’s impact. Most infants outgrow eczema by the age of 2-3 years.

There is no evidence to suggest that infants with eczema should not receive measles or pertussis immunization, but they should avoid immunization if they have a concurrent skin infection. Oral steroids are a last resort and are rarely used in infants with severe eczema. By following these guidelines, parents and caregivers can help manage eczema in infants and improve their quality of life.

The patient has severe acne and topical treatment has not been effective. The dermatologist will prescribe oral isotretinoin, which is a specialist drug that can only be prescribed in secondary care. However, isotretinoin is teratogenic, so women of reproductive age must use at least two methods of contraception while taking the drug. The combined oral contraceptive pill is often co-prescribed with isotretinoin to help balance the hormonal profile and improve the skin condition. Topical retinoids are the treatment of choice for mild to moderate acne, but they are not indicated for severe acne. Oral oxytetracycline can be used in combination with a topical retinoid or benzoyl peroxide for moderate acne, but it is contraindicated in pregnancy. Topical erythromycin is used for mild to moderate acne and should always be prescribed in combination with benzoyl peroxide to prevent microbial resistance. Topical benzoyl peroxide is used for mild or moderate acne and can be combined with a topical retinoid or antibiotic, or an oral antibiotic for moderate acne.

Fixed Drug Eruptions: Recurring Lesions Caused by Medications

Fixed drug eruptions are a type of skin reaction that occurs when a person takes a medication to which they are allergic. These eruptions are characterized by circular, violaceous, and oedematous plaques that appear in the same area where the offending drug was given. The lesions usually occur within 30 minutes to eight hours after drug administration and can be found in various parts of the body, with the hands, feet, and genitalia being the most common locations.

One of the distinguishing features of fixed drug eruptions is that the lesions tend to recur in the same area whenever the person takes the offending drug again. The lesions may resolve on their own, but they often leave behind macular hyperpigmentation, which is a darkening of the skin in the affected area. In some cases, perioral and periorbital lesions may also occur.

Overall, fixed drug eruptions can be a frustrating and uncomfortable experience for those who suffer from them. It is important to identify the offending drug and avoid it in the future to prevent further outbreaks.

Common Skin Infections and Conditions

Carbuncles, cellulitis, furuncles, infected sebaceous cysts, and necrotising fasciitis are all common skin infections and conditions that can cause discomfort and pain. Carbuncles are collections of pus that discharge to the surface via multiple sinuses and are usually caused by staphylococcal infection. Cellulitis is a bacterial infection of the lower dermis and subcutaneous tissue, presenting with a localised area of painful, red, swollen skin and fever. Furuncles are perifollicular abscesses, also typically caused by staphylococcal infection. Infected sebaceous cysts are round, dome-shaped, encapsulated lesions containing fluid or semi-fluid material. On the other hand, necrotising fasciitis is a serious bacterial infection of the soft tissue and fascia that can result in extensive tissue loss and death if not promptly recognised and treated with antibiotics and debridement. It is important to seek medical attention if any of these conditions are suspected, especially in patients with diabetes or those who are immunosuppressed. Clinical assessment and appropriate diagnostic tests should be conducted to ensure proper treatment and management.

Emergency Management of Erythrodermic Psoriasis

Erythrodermic psoriasis is a dermatological emergency that requires urgent hospital admission. This is evident in a patient presenting with a drop in blood pressure, tachycardia, borderline pyrexia, and rigors. Supportive care, including IV fluids, cool wet dressings, and a systemic agent, is necessary. The choice of systemic agent depends on the patient and may involve rapid-acting therapies like ciclosporin or slower agents like methotrexate. Discontinuing amoxicillin is crucial as it can cause Stevens–Johnson syndrome/toxic epidermal necrolysis. However, admission is essential in both emergency presentations. Starting ciclosporin or methotrexate orally is not appropriate without investigations. Repeat phototherapy should be avoided as it can worsen erythroderma.

Understanding the ABCDE Criteria for Skin Lesion Screening

Skin cancer, particularly malignant melanoma, is becoming increasingly common. To aid in early detection, the ABCDE criteria is a widely used tool in screening for melanoma. The criteria includes Asymmetry, Border irregularity, Colour variation, Diameter greater than 6mm, and Evolving. Other screening criteria, such as the Glasgow criteria, can also be used. It is important to note that an elevated lesion does not necessarily indicate pathology, and that crusting lesions should be examined carefully for other signs of suspicion. By understanding and utilizing these criteria, healthcare professionals can aid in the early detection and treatment of skin cancer.

Understanding the Different Grades of Pressure Ulcers

Pressure ulcers, also known as bedsores, are a common problem for people who are bedridden or have limited mobility. These ulcers can range in severity from mild to life-threatening. Understanding the different grades of pressure ulcers is important for proper treatment and prevention.

Grade 1 pressure ulcers are the most superficial type of ulcer. They are characterized by non-blanching erythema of intact skin and skin discoloration. The skin remains intact, but it may hurt or itch, and it may feel either warm and spongy or hard to the touch.

Grade 2 pressure ulcers involve partial-thickness skin loss and ulceration. Some of the outer surface of skin (epidermis) or the deeper layer of skin (dermis) is damaged, leading to skin loss. The ulcer looks like an open wound or a blister.

Grade 3 pressure ulcers involve full-thickness skin loss involving damage/necrosis of subcutaneous tissue. Skin loss occurs throughout the entire thickness of the skin and the underlying tissue is also damaged. The underlying muscles and bone are not damaged. The ulcer appears as a deep, cavity-like wound.

Grade 4 pressure ulcers are the most severe type of ulcer. They involve extensive destruction (with possible damage to muscle, bone or supporting structures). The skin is severely damaged and the surrounding tissue begins to die (tissue necrosis). The underlying muscles or bone may also be damaged. People with grade 4 pressure ulcers have a high risk of developing a life-threatening infection.

It is important to note that any ulcer with focal loss of skin integrity ± pus/blood is not a pressure ulcer and may require different treatment. Understanding the different grades of pressure ulcers can help healthcare professionals provide appropriate care and prevent further complications.

Common Skin Conditions: Symptoms and Treatments

Dermatitis herpetiformis is a rare skin condition that is linked to gluten sensitivity. It causes clusters of blisters to appear symmetrically on the scalp, shoulders, buttocks, elbows, and knees. Treatment involves a gluten-free diet and medication to reduce itching.

Atopic dermatitis, also known as eczema, is a chronic and itchy skin condition that is very common. It can appear anywhere on the body and is often treated with topical steroids and moisturizers.

Seborrheic dermatitis is a chronic form of eczema that mainly affects the scalp and face. It causes redness, itching, and flaking of the skin. Treatment involves medicated shampoos and topical creams.

Guttate psoriasis is a type of psoriasis that causes small, teardrop-shaped plaques all over the body. It often follows a streptococcal throat infection and is treated with topical steroids and phototherapy.

Eczema pompholyx, also known as hand/foot eczema, is characterized by blisters on the hands and feet. Treatment involves avoiding irritants and using topical steroids and moisturizers.

Causes of Non-Scarring and Scarring Alopecia

Non-scarring alopecia is a condition where hair loss occurs without any visible scarring on the scalp. The most common causes of this type of alopecia include telogen effluvium, androgenetic alopecia, alopecia areata, tinea capitis, and traumatic alopecia. In some cases, non-scarring alopecia can also be associated with lupus erythematosus and secondary syphilis.

Tinea capitis, caused by invasion of hairs by dermatophytes, most commonly Trichophyton tonsurans, is a common cause of non-scarring alopecia. This type of alopecia is characterized by hair loss in circular patches on the scalp.

On the other hand, scarring alopecia is a condition where hair loss occurs with visible scarring on the scalp. This type of alopecia is more frequently the result of a primary cutaneous disorder such as lichen planus, folliculitis decalvans, cutaneous lupus, or linear scleroderma (morphea). Scarring alopecia can be permanent and irreversible, making early diagnosis and treatment crucial.

In conclusion, the different causes of non-scarring and scarring alopecia is important in determining the appropriate treatment plan for patients experiencing hair loss.

Surgical Margins for Skin Cancer Excision

When removing skin cancer through excision biopsy, it is important to use appropriate surgical margins to ensure complete removal of the cancerous cells. The size of the margin depends on the type and thickness of the cancer.

For melanomas, a 2 mm margin is used for the initial excision biopsy. After calculating the Breslow thickness, an additional wide excision is made with margins ranging from 1 cm to 2 cm, depending on the thickness of the melanoma. A 1 cm margin is used for melanomas measuring 1.0–4.0 mm, while a 2 cm margin is used for melanomas measuring >4 mm.

Squamous-cell carcinoma (SCC) requires a 4 mm excision margin, while basal-cell carcinoma (BCC) requires a 3 mm margin.

Using appropriate surgical margins is crucial for successful removal of skin cancer and preventing recurrence.