Childhood disintegrative disorder (CDD) is a rare condition affecting a child's development. Children affected with this disorder develop normally until age 2-4, but then begin to demonstrate a severe loss of social, language, motor and other skills. CDD is associated with autism and is considered an autism spectrum disorder. Symptoms include a loss of skills already acquired related to language, play, and bowel/bladder control as well as social and motor skills. Although loss of skills often reaches a plateau by age 10, children with CDD will require lifelong support. Often people with CDD will also develop epilepsy, a seizure disorder. If signs and symptoms point to developmental delay, a physician or mental health specialist will test the child further to diagnose CDD. A physician or mental health specialist may order a neurologic exam, genetic test, communication test, lead screening, hearing/vision test, as well as other tests that measure development. There is no cure for CDD, but treatment is focused on medications and behavior therapy to reduce or manage symptoms.