This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Dental
Pseudo Nikolsky sign is seen in 
Select and explain. 
A. Pemphigus, B. Lupus vulgaris, C. Toxic epidermal necrolysis, D. Leischmaniasis
C: Toxic epidermal necrolysis
Answer: C: Toxic epidermal necrolysis 
Explanation: 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.