Introduction. Alopecia areata (AA) is an autoimmune disease-causing non-scarring alopecia. It is usually treated with immunosuppressive agents, to which some patients fail to respond adequately.
Material and Methods. Three patients with AA refractory to standard therapy were treated with intra-dermal injection of autologous platelet rich plasma (PRP) every four weeks.
Results. All three patients showed remarkable improvement after multiple sessions of PRP treatment.
Conclusion. Autologous PRP is safe and effective in treatment-resistant forms of AA demonstrated in many case reports; therefore it deserves further study with randomized, placebo-controlled trials.
