This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Anatomy of skin, Subject name: Dental
[{'content': 'Nail is involved in all except- \nSelect and explain. \nA. Psoriasis, B. Lichen planus, C. Fungal infection, D. androgenetic alopecia', 'role': 'user'}, {'content': 'Answer: D \nExplanation: Androgenetic alopecia means loss of hair and thinning of hair in the fronto-temporal region- male patern hair loss. Nails are affected in Psoriasis, lichen planus, and fungal infection. Ref Harrison20th edition pg 1234', 'role': 'assistant'}]