Reported cases of alopecia after mesotherapy include both scarring and non-scarring patterns, suggesting diverse mechanisms, such as mechanical injury, cytotoxicity from solvents, inflammation, or infection. In this series, none of the patients experienced full regrowth, highlighting the potential for lasting aesthetic sequelae. Published cases show similar variability but often lack detailed trichoscopic or procedural information, limiting interpretation. These findings underscore the importance of proper counseling, careful technique, and close follow-up when using dutasteride mesotherapy. This complication may be underrecognized, and clinicians should maintain vigilance for early detection and management. .
Nogueira et al. (Sun,) studied this question.