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: Pathology
[{'content': "Nikolsky's sign seen in all of the following, except: \nSelect and explain. \nA. Bullous pemphigoid, B. Mucus membrane pemphigoid, C. Toxic epidermal necrolysis, D. Scalded skin syndrome", 'role': 'user'}, {'content': "Answer: A \nExplanation: Nikolsky's Sign\n\nA bulla can be induced on normal-appearing skin if firm lateral pressure is exerted.\nIt is acharacteristic feature of pemphigus vulgaris\nNikolsky's sign absent in- Bullous pemphigoid\n\nPositive Nikolsky's Sign Present in\n\nPemphigus vulgaris\nPemphigus foliaceus\nFamilial benign pemphigus (Halley- Hailey disease)\nEpidermolysis Bullosa Dystrophic, Recessive\nErythema multiforme\nBullous lichen planus\nCicatricial Pemphigoid (Benign mucous membrane pemphigoid, ocular pemphigus\nProliferative verrucous leukoplakia\nToxic epidermal necrolysis (Drug reaction)\nScalded skin syndrome (Bacterial infection)", 'role': 'assistant'}]