Membranous Aplasia Cutis Congenita: A Case Report

Aplasia cutis congenita (ACC) is a rare congenital skin defect in neonates, most commonly located on the scalp. ACC phenotypes can range from ulcerated to scarred and vary in their underlying etiology, with many having associations with perinatal or obstetrical conditions. This case specifically describes the membranous subtype without multiple abnormalities. Most group 1 lesions heal over several months; in this case, no treatment was required, and the infant has continued to meet all developmental milestones through his first year of life.