Clinical and Genetic Factors Associated With Psychotic Symptoms Among Cocaine Abusers

Multicentric Descriptive Cross-sectional Study Evaluating Cocaine Users in Treatment Center

The aim of this study is to determine the clinical, genetic and environmental factors associated with the phenotype "severe psychotic symptoms" caused by cocaine.

The second purpose is to include gene x environment interaction and to analyse the factors associated with the presence or the absence of severe psychotic symptoms induced by cocaine.

Inclusion criteria:

• Adults, cocaine users, who have signed an informed consent

Exclusion criteria:

• Poor venous condition (for blood samples), specially protected people, non French speaking, people who refuse to sign the consent.