Dermatology Question Bank

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1. Child with loss hair in the temporal area with microscopic finding Dx

A child with temporal hair loss and characteristic microscopy/exam findings (boggy inflammatory mass) has a kerion, an inflammatory form of tinea capitis caused by a dermatophyte.

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2. An 80 year old man complains of severe itching mainly in the wrist and between his fingers, his condition is associated with excoriation marks and it is superimposed by secondary infection, the patient recently finished a 10-days course of antibiotics. What is the diagnosis?

Severe itching at the wrists and finger webs with excoriation and secondary infection is clinically scabies; here the candidal/monilial superinfection after antibiotics is keyed as 'Monilia,' though the primary itch pattern is classic scabies. [REVIEW: keyed answer may be incorrect — the wrist/finger-web pruritus is classic for scabies; 'Monilia' does not explain the interdigital burrow itching.]

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3. A patient presents with hypopigmentation in the left arm associated with ulnar nerve hypertrophy. What is the diagnosis?

Hypopigmented skin with thickening of a peripheral nerve (ulnar) is characteristic of leprosy (Hansen disease), which damages skin and peripheral nerves; vitiligo lacks nerve involvement.

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4. Pituitary adenoma secrete:

Prolactin is among the hormones secreted by pituitary adenomas (prolactinoma is the most common functioning pituitary tumor), causing galactorrhea and menstrual disturbance.

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5. Patient with pustule around the mouth the organism is herpes simplex what is the treatment.

Perioral lesions caused by herpes simplex are treated with acyclovir (antiviral); antibiotics and steroids are inappropriate for a viral infection.

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6. In pt with moderately sever acne valgarus best ttt:

Moderately severe acne vulgaris is best treated with oral isotretinoin, the most effective therapy for significant nodular/scarring or refractory disease.

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7. A college student is complaining of severe itching in the ankle and between his fingers, this is the first attack, on examination the lesions are well demarcated. What is the most likely diagnosis?

A first attack of severe itching at the ankle and finger webs with well-demarcated lesions is classic for scabies (Sarcoptes scabiei), which favors finger webs and flexural sites.

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8. Patient presented with a 6 week history of itching & redness all over the body with wheals. Which type of urticaria this pt has:

Itchy wheals (urticaria) lasting more than 6 weeks define chronic urticaria, distinct from acute/allergic urticaria that resolves within hours to a day or two.

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9. Most common association with acanthosis negricans (one):

Acanthosis nigricans is most commonly associated with insulin resistance (e.g., obesity, type 2 diabetes, PCOS); malignancy-associated cases are much less common.

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10. photo for face showing red area at angle of nose and he suffer from erythema and scaly at this area , chest and scalp :

Facial erythema with greasy scaling at the nasolabial folds plus scalp and chest involvement is typical of seborrheic dermatitis (Malassezia-related).