This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Blistering disorders, Subject name: Dental
[{'content': 'Bullous skin lesions are seen in the following except: \nSelect and explain. \nA. Impetigo, B. Diabetes mellitus, C. Porphyria, D. Lupus vulgaris', 'role': 'user'}, {'content': 'Answer: D \nExplanation: Bullous Skin Lesions - Primary blistering autoimmune diseases (pemphigus, bullous pemphigoid, herpes gestationalis, cicatricial pemphigoid, dermatitis herpitiformis, linear Ig A disease, epidermolysis bullosa aquisita). Secondary blistering diseases (contact dermatitis, erythema multiforme, TEN). Infections (VZV, HSV, enteroviruses e.g. Hand foot mouth syndrome, SSSS, bullous impetigo). Para neoplastic pemphigus Cutaneous emboli Diabetes Porphyrias - PCT (Porphyria cutanea tarda) , pseudoporphyria Bullous dermatosis of hemodialysis.', 'role': 'assistant'}]