The international literature underlines an high rate of comorbidity between early psychosis and substance abuse associated to poor outcomes.

The aims of the present study are to evaluate the rate of substance abuse among subjects at first contact for psychotic disorder with one of the three Community Mental Health Centers (CMHC) of Bologna Ovest and to consider its influence on the course of the disease.

A retrospective study was conducted on subjects aged between 18-30 years with ICD-10 F2 (schizophrenia, schizotypal disorder and delusional disorder) diagnosis at first contact with a Bologna Ovest CMHC over a five-year period (January 2002- December 2006).

The sample was investigated about the presence of ‘Substance Abuse’ according to ICD-10 criteria. A 1-year follow-up assessment was performed.

Among the 56 patients recruited, 26 (46%) meet the ICD-10 criteria for ‘Substance Abuse’ (Abusers). Cannabis is the most frequently used substance (88%). Psychosis appears 1,1 year before among Abusers compared to Non-Abusers. At 1-year follow-up the 46% of Abusers works or studies compared to 67% among Non-Abusers. Moreover hospital admission concerns the 31% of subjects among Abusers and only the 17% of Non-Abusers group.

This study confirms the high rate of substance abuse among subjects with early psychosis reported in literature and suggests its potential negative influence on the course of psychotic disease. To improve the prognosis of patients with psychotic disorder and concurrent substance abuse it seems necessary promoting an integrated intervention between the CMHCs and the Addiction Services.