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A. Trink, E. Sorbellini, P. Bezzola, L. Rodella, R. Rezzani, Y. Ramot and F. Rinaldi A randomized, double-blind, placebo- and active-controlled, half-head study to evaluate the effects of platelet-rich plasma on alopecia areata British Journal of Dermatology 169

Version of Record online: 30 AUG 2013 | DOI: 10.1111/bjd.12397

What's already known about this topic?

  • Platelet-rich plasma (PRP) has emerged as a new treatment modality in dermatology, and preliminary evidence has suggested that it might have a beneficial role in hair growth.
  • No study has ever evaluated the effect of PRP on hair growth in patients with alopecia areata (AA).

What does this study add?

  • PRP was found to increase hair regrowth compared with triamcinolone acetonide or placebo, and Ki-67 levels were significantly higher. PRP also decreased the percentage of dystrophic hairs and burning or itching sensation.
  • This study, which is the first to investigate the effects of PRP on AA, suggests that PRP may serve as a safe and effective treatment option in AA.

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