Inclusion Criteria:  Male or female 18 years of age and older, Followed for a psychotic disorder, With no known organic etiology for the psychotic disorder, Not having formulated its opposition to participation in the study (or his/her tutor/curator), Affiliated with the social security system.  Exclusion Criteria:  Patients protected by law (minors, pregnant or breastfeeding women, deprived of liberty or hospitalized under constraint, under administrative or judicial supervision) except patients under tutorship or curatorship.