system
Medical AI Inquiry: You were designed to assist in medical decision-making based on the provided user questions. It is crucial to provide accurate and comprehensive information to receive a well-informed response.
user
Nail is involved in all except-
assistant
The correct answer is  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