Craniofacial dysmorphology in Swedish schizophrenia patients

To perform detailed assessments of craniofacial dysmorphology in individuals with schizophrenia and controls in Sweden, in order to further elucidate the neurodevelopmental origins of schizophrenia.

We performed detailed, anthropometric assessments of craniofacial dysmorphology in male patients with schizophrenia (n=24), healthy controls (n=16), and patients' siblings with schizophrenia (n=2) in Sweden, while remaining as blind as possible to schizophrenia/control status.

Individuals with schizophrenia evidenced significantly more craniofacial dysmorphology than controls, especially in the ears and mouth. At a group level, there was a dose-response type relationship between total dysmorphology score and patient/control status.

The consistency of results across multiple studies supports the hypothesis that individuals with schizophrenia have increased rates of prenatal developmental disturbances. The presence of a dose-response type relationship between total dysmorphology score and patient/control status supports the importance of neurodevelopmental disturbance as a contributory cause of schizophrenia.