Catatonia: A Common Cause of Late Regression in Autism

Autism spectrum disorder (ASD) is a neurodevelopmental disorder characterized by social communication deficits and restricted interests and behaviors which begin very early in life. In about a quarter of cases, the symptoms emerge about 18–24 months after a period of normal development, a phenomenon commonly described as early regression. However, marked functional decline can also occur in persons with autism after a relatively stable childhood.

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Medical Advisory – Catatonia and Neuroleptic Malignant Syndrome (NMS)

The PMSF Medical Advisory Committee (MAC) would like to inform the patient community and the providers who care for them that around puberty or in early adulthood, some people with Phelan-McDermid syndrome are prone to developing bipolar disorder, associated psychotic features, and severe anxiety or obsessive-compulsive symptoms. Catatonia occurs in roughly 50% of Phelan-McDermid syndrome patients who develop psychiatric symptoms.

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