Neuropsychiatric disorders in the 22q11 deletion syndrome

Purpose: This study was undertaken with a view to establishing the occurrence of neuropsychiatric disorders in the 22q11 deletion syndrome. Methods: Thirty-two children and young adults with genetically confirmed 22q11 deletion were given comprehensive neuropsychiatric assessments. Results: Altogether, 56% had a neuropsychiatric disorder. Only 6% were of normal IQ and free of psychiatric disorder. Attention-deficit/hyperactivity disorder was diagnosed in 44% and 31% had an autism spectrum problem. In 16% criteria for both these diagnoses were met, fifty-three percent had mental retardation, often with a test-profile suggesting a nonverbal learning disorder. Conclusion: The findings imply that a majority of children and adolescents with 22q11 deletion syndrome are in need of neuropsychiatric assessment and intervention.