Alopecia areata is a type of hair loss that occurs when the immune system mistakenly attacks hair follicle roots, where hair growth begins. It is most common in people younger than 20, but children and adults of any age may be affected.
Medical treatments for alopecia areata may include medications that are either put on the scalp or injected. Because hair often regrows, treatment may not be necessary.
|Primary Medical Reviewer||Adam Husney, MD - Family Medicine|
|Specialist Medical Reviewer||E. Gregory Thompson, MD - Internal Medicine|
|Last Revised||May 29, 2012|
WebMD Medical Reference from Healthwise