Alopecia areata is a condition that causes round patches of hair loss.
Alternative Names
Alopecia totalis; Alopecia universalis
Causes
The cause of alopecia areata is unknown. About a fifth of people with this condition have a family history of alopecia. Alopecia areata may sometimes occur with autoimmune diseases.
Forms of alopecia include:
Alopecia totalis -- complete loss of scalp hair
Alopecia universalis -- total loss of all body hair
Symptoms
Loss of all scalp and body hair (alopecia universalis)
Loss of all scalp hair (alopecia totalis)
Roundish patches of hair loss on the head
Smooth, hairless scalp in the affected areas
Hairs that look like exclamation points are sometimes seen at the edges of a bald patch.
Exams and Tests
On occasion, a scalp biopsy may be performed. Several blood tests may be done, because alopecia areata may occur with autoimmune conditions.
Treatment
No fully effective treatments are available. Typical therapy includes:
Steroid injection under the skin surface
Topical corticosteroids
Ultraviolet light therapy
Irritating drugs may be applied to hairless areas to cause the hair to regrow.
Outlook (Prognosis)
Full recovery of hair is common. However, some people may have a poorer outcome, including those with:
Permanent hair loss is a possible complication of alopecia areata.
When to Contact a Medical Professional
Call for an appointment with your health care provider if you are concerned about hair loss.
Review Date:
10/3/2008
Reviewed By:
Kevin Berman, MD, PhD, Atlanta Center for Dermatologic Disease, Atlanta, GA. Review provided by VeriMed Healthcare Network. Also reviewed by David Zieve, MD, MHA, Medical Director, A.D.A.M., Inc.