Alopecia universalis or alopecia areata universalis is a medical condition involving rapid loss of ALL hair. It is considered the most severe form of alopecia areata. Hair loss in alopecia universalis occurs all over the body including the scalp, eyebrows and eyelashes.
Alopecia universalis is the rarest form of alopecia known. It is considered an autoimmune disorder. The hair follicles are not dead or "destroyed" they are still alive, but the production of hair has ceased because of the body's autoimmune response to the hair follicles.