What should you know about red light therapy alopecia areata?

Alopecia areata is an immune-mediated condition in which the immune system targets hair follicles. It can cause smooth, sharply defined patches on the scalp or beard, and sometimes affects eyebrows, eyelashes, or body hair. The skin may look normal, although itching, tingling, or nail changes can occur.

Red light devices deliver low-intensity visible light to the skin. Their role in alopecia areata is not the same as treating acne or pimples, and a device cannot confirm why hair is falling out. Other causes include infection, inflammation, traction, medication effects, and scarring disorders, so examination matters before self-treatment.

Arrange a dermatology assessment for new, expanding, or repeated patches. Bring a list of medicines and supplements, describe the timing of shedding, and mention eyebrow or nail changes. A clinician may examine the scalp closely and discuss treatments based on the extent and pattern of loss.

If light therapy is included, use the prescribed device, schedule, distance, and eye protection. Do not increase exposure because regrowth is slow or uneven. Check the scalp regularly for redness, scaling, tenderness, or new patches, and use gentle hair care that avoids tight pulling and harsh chemicals.

Seek prompt dermatology review when hair loss spreads quickly, involves eyelashes or eyebrows, or appears with scalp pain, scale, pus, scarring, or marked inflammation. Urgent care is appropriate for facial swelling, breathing difficulty, or a severe reaction to a device or product. A smooth patch should still be assessed even when it does not hurt.

Does the pattern fit alopecia areata or another cause? Are my follicles showing signs of scarring? What treatments have the strongest role for my pattern? Is red light suitable alongside them? How will we judge progress, and when should I report new patches?