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This source evaluates the clinical effectiveness of 308 nm monochromatic excimer phototherapy in treating moderate-to-severe alopecia areata, noting that both laser and lamp methods show promise without significant risks.

This study found that combining 308-excimer phototherapy with intramuscular triamcinolone acetonide was effective and well tolerated for treating resistant alopecia totalis, showing a 90% overall response rate in the ten patients studied, with the best results observed in younger patients.

308 nm excimer phototherapy can help some people with alopecia areata regrow hair, especially if their condition is less severe.

This systematic review found that light and laser therapies, including excimer and erbium-glass lasers, generally increase hair density and diameter in various types of alopecia, with particularly notable effects in androgenic alopecia but limited efficacy in telogen effluvium.

This review highlights that laser and light treatments could serve as safe and effective alternatives to current therapies for alopecia areata, with the excimer laser showing positive results, though further randomized controlled trials are necessary to establish optimal treatment protocols.