%0 Case Reports
%T Psychosis and Dandy-Walker syndrome: a case report and review of the literature.
%A Porras Segovia A
%A Guerrero-Jiménez M
%A Carrillo de Albornoz Calahorro CM
%A Gutierrez-Rojas L
%J Gen Psychiatr
%V 34
%N 2
%D 2021
%M 33937630
暂无%R 10.1136/gpsych-2020-100254
%X Dandy-Walker syndrome (DWS) is a group of brain malformations which sometimes present with psychotic symptoms. We present the case of a patient diagnosed with Dandy-Walker variant who presented with schizophrenia-like psychosis. A man in his 30s was admitted to an acute psychiatric unit presenting with persecutory delusions, auditory hallucinations and violent behaviour. The MRI performed showed the typical alterations of Dandy-Walker variant: vermian hypoplasia and cystic dilatation of the fourth ventricle. He also suffered from mild intellectual disability. After being treated with olanzapine 10 mg/d for a month, his psychotic symptoms greatly improved and he was discharged. In conclusion, DWS may cause psychosis through a dysfunction in the circuit connecting prefrontal, thalamic and cerebellar areas. The association between these two conditions may contribute to the understanding of the aetiopathogenesis of schizophrenia.