research Comparison of Clinical Efficacy and Trichoscopic Changes in Alopecia Areata of the Scalp following Treatment with Intralesional Triamcinolone Acetonide and Autologous Platelet-Rich Plasma
This study found that intralesional triamcinolone acetonide is more effective and faster than platelet-rich plasma in promoting hair regrowth for scalp alopecia areata.

