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
A male patient presents with patchy loss of hair on scalp, eyebrows and beard. He also gives istory of rapid graying of hair in a few areas. The likely diagnosis is-
assistant
The correct answer is  History of patchy hair loss with retaining of grey hairs is alopecia areata. other options anagaen effluvium, telogen effluvium are diffuse hair loss. androgenetic alopecia is paterened hair loss or male pattern baldness which involve fronto temporal receding. Ref Harrison20th edition pg 1230