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Published online by Cambridge University Press: 13 June 2014
A 24 year old man with established Gilles de la Tourette Syndrome (GTS)and schizophrenia of recent onset is described. Other comorbid reports of schizophrenia and GTS are reviewed showing this association to be rare, with only nine previous reported cases. GTS and schizophrenia have many phenomenological similarities and a link has been considered between the two disorders but never clearly established. Reasons for the lack of an association where one might be expected are considered. Possibilities include under reporting or misdiagnosis of GTS or the possible masking of psychotic symptoms by treatment of the GTS.