Hair Transplantation: Modern Hair Restoration Surgery

Modern hair restoration surgery (HRS) had evolved significantly since its introduction in 1959, encompassing techniques like hair transplantation (HT), scalp reduction, scalp flaps, and tissue expansion. The most common cause of hair loss was androgenetic alopecia (AGA), or male pattern baldness, but other causes included trauma, diseases like alopecia areata and lichenplanopilaris, and iatrogenic factors, primarily from previous surgeries.