Papulosquamous & Eczema MCQs

Dermatology · 6 free questions with answers & explanations.

1. A 32-year-old man presents with well-demarcated erythematous plaques covered by thick silvery-white scales on his elbows and knees for the past 8 months. On scraping the scale, a characteristic bleeding point is observed. Which of the following best describes the complete sequence of signs elicited during this test?
2. A 28-year-old woman has pruritic, polygonal, flat-topped violaceous papules on her flexor wrists and ankles. Examination of the buccal mucosa reveals a lacy white network pattern. Which histopathological feature is MOST characteristic of this condition?
3. A 5-year-old child is brought with intensely pruritic, dry, lichenified patches on the antecubital and popliteal fossae since infancy. The mother has bronchial asthma. Serum IgE is markedly elevated. Which of the following features, if present, would be considered a MAJOR diagnostic criterion for this condition according to Hanifin and Rajka criteria?
4. A 45-year-old man presents with erythematous, greasy scales on the scalp, nasolabial folds, and presternal area. He is HIV-positive with a CD4 count of 85 cells/μL. Skin scrapings with 10% KOH show flask-shaped yeast forms with unipolar budding. What is the organism responsible and the first-line topical treatment?
5. A 38-year-old woman presents with chronic, intensely pruritic eczema of the lower legs with hyperpigmentation, haemosiderin deposition, and lipodermatosclerosis. She has bilateral varicose veins for 10 years. Which term BEST describes this clinical entity?
6. A 22-year-old medical student develops erythematous, vesicular, intensely pruritic lesions on both hands 24 hours after wearing latex gloves for a surgical posting. Patch testing is planned. Which of the following is the CORRECT reading time for a standard patch test to detect Type IV (delayed-type) hypersensitivity?