Does alopecia areata cause hair loss?

Alopecia areata is an immune-related condition in which the body's defenses mistakenly target hair follicles. Hair can fall out from the scalp, beard, eyebrows, eyelashes, or other hair-bearing skin. The affected skin often looks smooth rather than scaly, although short broken hairs or tiny hairs may remain at the edges. Hair loss can develop quickly, and the shape or number of patches can change over time. Regrowth may occur, but the course varies between people.

Hair loss has many possible explanations, including temporary shedding, scalp inflammation, hormonal changes, nutritional problems, medicines, and inherited patterns. A clinical examination helps distinguish these possibilities; a close look at the scalp and hair pattern is often informative.

Arrange a dermatology assessment if you notice a new patch, widening areas, eyebrow loss, or repeated episodes. Take a clear photograph when you first notice the change so progression can be discussed. Use gentle hair care, avoid tight hairstyles and harsh chemical treatments, and protect exposed scalp skin from sun and cold. Do not scratch or pick at smooth patches.

Treatment depends on the extent and location of loss, age, other health factors, and whether follicles remain active. A clinician may discuss observation, topical treatment, injections, or other options. Do not start prescription treatment without an assessment, especially on the face or near the eyes.

Seek prompt medical care if hair loss is sudden and extensive, accompanied by scalp pain, marked redness, pus, heavy scaling, or bleeding, or occurs with changes in vision or severe eye-area symptoms. Contact a clinician sooner if eyebrow or eyelash loss leaves the eyes exposed. Emergency help is appropriate for swelling of the face or throat, trouble breathing, or faintness.

Ask whether the distribution and surface of the patches fit Alopecia Areata, whether another scalp condition should be checked, what regrowth signs to watch for, and how treatment might affect nearby skin. You can also ask whether photographs or blood tests would help clarify the cause.