How common is hair loss in alopecia areata?

Alopecia areata is an immune-related condition in which the body's defenses affect hair follicles. Hair may come away in smooth, round or oval patches, sometimes with short tapered hairs at the edges. The skin in a patch may look normal, although mild itch, tingling, or sensitivity can occur. Eyebrows, eyelashes, beard area, and body hair can also be involved. Hair loss has many possible causes, so a patch or change in shedding needs a clinical assessment rather than a conclusion from appearance alone.

Take a clear look at the scalp and note when the patch or shedding began, whether it is expanding, and whether other hair-bearing areas have changed. Handle the hair gently and avoid tight styles, harsh chemicals, and scratching. A dermatologist can examine the scalp, check the nails or other hair-bearing areas when relevant, and discuss options that match the extent and activity of the condition.

Arrange a dermatology appointment for sudden patchy loss, rapidly enlarging areas, eyebrow or eyelash loss, scalp inflammation, or uncertainty about the diagnosis. Seek prompt medical care for severe pain, pus, extensive crusting, or feeling unwell, since those features may point to another scalp problem. Earlier review also helps distinguish smooth follicle loss from breakage or scarring.

Ask what pattern your examination shows, whether any testing is needed, which treatments are suitable, and how progress will be monitored. You can also ask how to protect exposed skin and what changes should prompt an earlier review.