<prompt> Male with patchy loss of scalp hair and grey hair in the eyebrows and beard diagnosis isAnagen effluviumAlopecia areataTelogen effluviumAndrogenic alopecia  <response>: B i.e. Alopecia areataSingle or multiple circumscribed smooth patchy hair loss, most obviously on scalp but frequently involving any hair bearing skin eg beard, eyebrows, eye lashes, with pathognomic exclamation mark going gray overnigth phenomenon i.e., white or gray hairs are frequently sparedQ indicate the diagnosis of alopecia areata. Scanty stumps form Exclamation mark ! in alopecia areata 