Random Bald Spot: Causes and Next Steps

A smooth, sharply defined patch without scale may fit alopecia areata, an autoimmune hair-loss condition. A patch with broken hairs, scaling, crusting, tenderness, or swollen areas may suggest scalp ringworm or another scalp disorder. Repeated tight hairstyles, extensions, or pulling can contribute to traction alopecia. Hair may also be cut or broken rather than shed from the root.

The number of patches, their edges, eyebrow or eyelash changes, scalp symptoms, and speed of onset all matter. Photograph the area in consistent lighting and avoid applying strong treatments before the scalp has been examined, unless a clinician has advised them.

Use gentle hair care, pause tight styles and chemical treatments, and avoid sharing combs, hats, or pillowcases if infection is possible. Do not scratch or pick at the patch. A clinician may inspect the scalp and hairs, and may recommend treatment based on the cause. [Bald Patches](/symptoms/bald-patches/) that are stable still deserve assessment if the diagnosis is uncertain; a [Hair Transplant](/treatments/hair-restoration/hair-transplant/) is not the first step for every new patch.

Arrange a prompt dermatology review if the patch is enlarging, new patches appear, or the scalp is painful, inflamed, scaly, crusted, or draining. Seek earlier care for fever, swollen neck glands, or hair loss in a child, because contagious scalp infection may need prescription treatment. Urgent assessment is appropriate for severe pain, rapidly spreading inflammation, or significant illness.

Does the patch look smooth, broken, inflamed, or infected? Could alopecia areata, scalp ringworm, or traction be involved? Do I need testing or prescription treatment? Should I change my hairstyle or hair products while it heals?