(HealthDay News) — Alopecia areata is a form of hair loss that’s triggered by your immune system mistakenly viewing hair follicles as threats to your health.

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This can trigger patchy hair loss on the head, complete hair loss on the head or the loss of body hair, the American Academy of Family Physicians says.

The condition — for which there is no cure — is most common among children and adults in their early 20s.

The AAFP says you should ask your doctor:

  • How much hair should I lose before you and I become concerned?
  • I have a parent who had the condition. Is there a genetic test that will determine if I will get it?
  • Do certain diseases or conditions raise a person’s risk for developing alopecia areata?

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