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': 'A 60-year old patient presented with several bullous lesions for the last 3 days; each bulk was surrounded by an erythematous halo. There were multiple target lesions. The patient also had oral erosions. The most likely diagnosis is – \nSelect and explain. \nA. Chicken pox, B. Herpes simplex, C. Herpes zoster, D. Steven – Johnzon syndrome', 'role': 'user'}, {'content': 'Answer: D \nExplanation: This patient has :-\n\ni) Target lesion\nii) Mucosal involvement (oral erosion)\n\nIt has already been explained that erythema multiforme syndrome has two subtypes -\n\n\nErythema multiform\nSteven - Johnson syndrome - toxic epidermal necrolysis complex (SJS - TEN complex)\n\n\nMucosal involvement (oral lesions) is common in SJS - TEN complex, whereas it is uncommon in erythema multiforme (in less than 20% of patients).\nSo, amongst the given options answer is Steven - Johnson syndrome.', 'role': 'assistant'}]