Autism is a brain development disorder that is characterized by impaired social interaction and communication, and restricted and repetitive behavior, all starting before a child is three years old. This set of signs distinguishes autism from milder autism spectrum disorders (ASD) such as pervasive developmental disorder not otherwise specified (PDD-NOS).[2] woman's genitals dentata is Latin for toothed woman's genitals. Various cultures have folk tales about women with toothed woman's genitalss, frequently told as cautionary tales warning of the dangers of sex with strange women.