Pseudo Nikolsky sign is seen in: (A) Pemphigus, (B) Lupus vulgaris, (C) Toxic epidermal necrolysis, (D) Leischmaniasis
Answer is C. Nikolsky sign is present in disorders with acantholysis where lateral pressure on normal skin around blister results in seperation of layers of epidermis and extension of blister. Ex: Pemphigus.
Pseudo Nikolsky sign is seen in Toxic Epidermic Necrolysis (TEN) where epidermal seperation is due to death of epidermal cells.