Q1 · Alopecia Areata
MediumSudden, well-circumscribed patches of non-scarring hair loss with 'exclamation mark' hairs describe?
Explanation
Alopecia areata is an autoimmune cause of sudden, well-circumscribed, non-scarring hair loss with characteristic 'exclamation mark' hairs at the margins. It often regrows spontaneously but can recur or progress.