This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Skin lesions and disorders of pigmentation, Subject name: Dental
[{'content': 'Target lesions are characteristic of \nSelect and explain. \nA. Dermatitis herpetiformis, B. Sulpha drug reaction, C. Lichen planus, D. Erythema multiformae', 'role': 'user'}, {'content': 'Answer: D \nExplanation: Target lesions- Iris lesions: these are pathognomic of erythema multiforme. commonly found on the extremities especially hands. there are three zones of color change: 1. central dark or sometimes blistered area 2.surrounded by pale odematous zone 3.inturn rimmed by another zone of odema IADVL textbook of dermatology, principles of clinical diagnosis,page 106.', 'role': 'assistant'}]