Pili torti-developmental delay-neurological abnormalities syndrome is characterized by growth and developmental delay, mild to moderate neurologic abnormalities, and pili torti. It has been described in a brother and his sister born to consanguineous Puerto Rican parents. The disease is pili torti-developmental delay-neurological abnormalities syndrome (MONDO_0009871). Also known as: abnormal hair, joint laxity, and developmental delay.