Estimating Prevalence of Inherited Disorders of Sulfur Amino Acids Metabolism in Patients With Psychotic Disorders.

This study is looking at how common rare inherited metabolic disorders — specifically problems with how the body processes sulfur-containing amino acids — are in people who have been diagnosed with a psychotic disorder. It involves a blood or urine test to screen for these conditions. **You may be eligible if...** - You are 18 or older (male or female) - You have been diagnosed with a psychotic disorder - No known medical reason has been found to explain your psychosis - You are affiliated with a social security system **You may NOT be eligible if...** - You are a minor - You are pregnant or breastfeeding - You are currently detained, hospitalized involuntarily, or under judicial supervision (except under guardianship or curatorship) Talk to your doctor to see if this trial is right for you.