The physical and psychological aspects of alopecia areata Alopecia areata is an unpredictable disorder that affects more than two and a half million men, women, and children in the United States and Canada. Causing patchy hair loss on the scalp and sometimes elsewhere on the body, this mysterious, noncontagious condition can be treated but it cannot yet be cured. Alopecia Areata: Understanding and Coping with Hair Loss is...