A 30-year-old woman develops well-defined hypopigmented macules on the face, with fine scale. Wood’s lamp shows yellow-green fluorescence . Likely diagnosis: A) Vitiligo B) Pityriasis alba C) Tinea versicolor D) Leprosy
A patient with diabetes has a well-demarcated, erythematous, scaly plaque in the groin. KOH shows pseudohyphae and budding yeast. Most likely organism: A) Trichophyton rubrum B) Candida albicans C) Malassezia furfur D) Sarcoptes scabiei dermatology mcq pdf
Dusky target lesions + mucosal involvement + drug trigger (carbamazepine) = SJS. Erythema multiforme major is an older term, but SJS is preferred when mucosal erosions and systemic symptoms present. KOH shows pseudohyphae and budding yeast
A 70-year-old man has tense bullae on the trunk and proximal limbs, with no mucosal lesions. Direct immunofluorescence shows linear IgG along the basement membrane. Diagnosis: A) Pemphigus vulgaris B) Bullous pemphigoid C) Dermatitis herpetiformis D) Epidermolysis bullosa acquisita A 70-year-old man has tense bullae on the