Exosome Treatment in Refractory Diffuse Alopecia Areata in a Pediatric Patient: Case Report

A 14-year-old male with refractory diffuse alopecia areata, unresponsive to standard treatments like oral prednisone, topical minoxidil, and clobetasol, was treated with a novel protocol involving microneedling and intradermal injections of triamcinolone acetonide, dutasteride, and synthetic exosomes over three monthly sessions. This approach led to progressive follicular regrowth, achieving complete hair density restoration by the third session. Exosomes, which carry mRNA and bioactive proteins, play a crucial role in tissue regeneration by activating Wnt/β-catenin and Sonic hedgehog signaling pathways, promoting follicular stem cell proliferation, and inhibiting apoptosis. This case highlights exosome-based therapy as a promising and innovative treatment for refractory autoimmune alopecia, offering ease of application, safety, and rapid results.