Alopecia Areata 1 C1863094
Alopecia areata is an autoimmune condition where the immune system attacks hair follicles, causing patchy hair loss on the scalp or body. It can affect people of any age. Hair may regrow on its own, and treatments like corticosteroids may help.
Key facts at a glance
- ICD-10
- L98.9
- ICD-11
- EA00.0
- Body system
- dermatologic
- Severity
- mild
- Chronic
- true
Medication Comparisons
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Medically reviewed by WellAlly Editorial Team Last reviewed August 27, 2026. · Read our editorial policy