Cosmetic Filler-Induced Hair Loss: Case Series and Literature Review

This document presents three cases of filler-induced alopecia (FIA) and reviews the current understanding of its clinical features, mechanisms, and treatments. Two females developed triangular patches of hair loss after hyaluronic acid injections, treated with corticosteroid injections and topical 5% minoxidil. A third female experienced alopecia areata-like hair loss after autologous fat grafting, treated with corticosteroids, 5% minoxidil, and microneedling. All patients experienced gradual hair regrowth with these treatments. The study emphasizes the importance of early recognition and intervention to prevent permanent hair follicle damage and highlights the need for a thorough understanding of frontotemporal anatomy to minimize risks during cosmetic filler procedures.