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 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 dermatology mcq pdf
A positive Nikolsky sign (epidermal peeling with lateral pressure) is classically seen in: A) Bullous pemphigoid B) Pemphigus vulgaris C) Psoriasis D) Lichen planus A 70-year-old man has tense bullae on the
Tense bullae + linear IgG along basement membrane. Pemphigus vulgaris has flaccid bullae + IgG in intercellular spaces (fishnet pattern). Wood’s lamp shows yellow-green fluorescence
A patient presents with violaceous, polygonal, pruritic papules on the wrists. Histology shows saw-tooth rete ridges and band-like lymphocytic infiltrate. Diagnosis: A) Psoriasis B) Lichen planus C) Discoid lupus D) Scabies