Children with the syndrome are low birth weight children. Characteristic symptoms of the syndrome include excessive body hair, delayed growth, particular facial features, short arms and legs with typical deformities of the lower arms and hands. Recently, a division between two types of CdL has begun to be made. Type I is the classic type, often with severe mental retardation, and is diagnosed immediately at birth. Type II is a considerably milder form, often not diagnosed until the age of two to three. Some children with CdL have autistic characteristics and are self-destructive. Vision and hearing problems are common. Congenital cardiac defects, deformities of the gastrointestinal system and epilepsy may also be present.