A Comparative Study of Therapeutic Response to Intralesional Injections of Platelet-Rich Plasma Versus Triamcinolone Acetonide in Alopecia Areata.

Background: Alopecia areata (AA) is a chronic nonscarring alopecia that involves hair follicles and is characterized by patchy areas of hair loss without any signs of clinical inflammation. Platelet-ri-ch plasma (PRP) has a high platelet concentration. Anti-inflammatory effect of PRP may be of great help in AA.