CDCRI San Diego June 6, 2018 Alopecia Areata How is Alopecia Areata Diagnosed? CDCRI San Diego June 6, 2018 Alopecia Areata Are you losing patches of hair, seemingly at random? If that is the case, it could be alopecia areata. Learn how alopecia areata is diagnosed at a dermatology clinic by a doctor.