Pseudo Nikolsky sign is seen in
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.
Pemphigus
Lupus vulgaris
Toxic epidermal necrolysis
Leischmaniasis