Definition
Childhood disintegrative disorder is a condition in which children develop normally through age 3 or 4. Then, over a few months, they lose language, motor, social, and other skills that they already learned.
Childhood disintegrative disorder is a part of the larger developmental disorder category of autism spectrum disorder.
References
American Psychiatric Association website. Intellectual disability. www.psychiatry.org/patients-families/intellectual-disability/what-is-intellectual-disability. Updated July 2017. Accessed June 16, 2021.
Marcdante KJ, Kliegman RM. Autism spectrum disorder and schizophrenia spectrum disorders. In: Marcdante KJ, Kliegman RM, eds. Nelson Essentials of Pediatrics. 8th ed. Philadelphia, PA: Elsevier; 2019:chap 20.