Abstract
Studies suggest platelet-rich plasma (PRP) may mitigate androgenetic alopecia (AGA), but each varies in the frequency of and interval between treatments. To compare the efficacy, satisfaction, tolerability, and safety of 2 initial PRP injection protocols over 6 months. Prospective, randomized, single-blinded trial among 40 patients with moderate AGA. Participants received subdermal PRP injections according to 1 of 2 treatment protocols: 3 monthly sessions with booster 3 months later (Group 1) or 2 sessions every 3 months (Group 2). Folliscope hair count and shaft caliber, global photography, and patient satisfaction questionnaires were obtained at baseline, 3 months, and 6 months. At 6 months, both groups demonstrated statistically significant increases in hair count (p < .001). These improvements occurred more rapidly and more profoundly for Group 1 (mean percent change: Group 1, 29.6 ± 13.6 vs Group 2, 7.2 ± 10.4; p < .001). Shaft caliber also increased significantly with no difference between groups. Treatments produced high satisfaction (82% "satisfied" or "highly satisfied") and were safe and well tolerated (mean pain score 2.1). Subdermal PRP injections are an efficacious and tolerable therapy among men and women with AGA...Continue Reading
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