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An autoimmune condition in which the immune system attacks hair follicles, causing round bald patches or, in severe cases, total scalp or body loss. It is
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An autoimmune condition in which the immune system attacks hair follicles, causing round bald patches or, in severe cases, total scalp or body loss. It is distinct from pattern baldness and now has approved drug treatments (oral JAK inhibitors). It needs a dermatologist.
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Not medical advice. General education only; it does not replace diagnosis or treatment by a licensed professional. Consult a board-certified dermatologist before starting, stopping or changing any treatment.
⚠️ When to see a doctor — don’t self-treat
- Sudden patchy or circular bald spots
- Redness, scaling, pus, pain or itch (possible scarring alopecia — treat urgently)
- Broken hairs or rapid loss
- Loss with body-wide signs (weight loss, fatigue, cycle changes, acne, extra hair)
- Loss right after a new medication
- Any hair loss in a child