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
[{'content': 'Pseudo Nikolsky sign is seen in \nSelect and explain. \nA. Pemphigus, B. Lupus vulgaris, C. Toxic epidermal necrolysis, D. Leischmaniasis', 'role': 'user'}, {'content': 'Answer: C \nExplanation: 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.\nPseudo Nikolsky sign is seen in Toxic Epidermic Necrolysis (TEN) where epidermal seperation is due to death of epidermal cells.', 'role': 'assistant'}]