Male with patchy loss of scalp hair and grey hair in the eyebrows and beard diagnosis is

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 spared)Q indicate the diagnosis of alopecia areata. Scanty stumps form 'Exclamation mark (!) in alopecia areata