![]() ![]() ![]() A person’s particular genetic makeup combined with other factors triggers AA.Īlthough your dermatologist may know by examining your scalp that you have AA, occasionally, a scalp biopsy is helpful in confirming the diagnosis.ĪA is not a symptom of a serious disease and usually occurs in otherwise healthy individuals. It is an autoimmune disease in which the body’s immune system attacks itself, in this case, the hair follicles. Nails may have tiny pinpoint dents and may rarely become distorted.ĪA is not contagious. AA usually has no associated symptoms, but there may be minor discomfort or itching prior to developing a new patch. Hair may fall out and regrow with the possibility of full hair regrowth always present. It is most common on the scalp, but can involve any hair-bearing site including eyebrows, eyelashes, and beards. One in five persons with AA has a family member who also has the disease.ĪA usually begins with one or more small, round, coin-size, bare patches. Children and young adults are most frequently affected, but persons of all ages are susceptible. The immune system, for unknown reasons, attacks the hair root and causes hair loss.ĪA occurs world-wide in both genders and in every ethnic group. Some people with AA (about 5%) may lose all scalp hair (alopecia totalis) or all scalp and body hair (alopecia universalis). population (about four million people) will develop AA in their lifetime. Alopecia Areata (AA) causes hair loss in small, round patches that may go away on their own, or may last for many years.
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