[Classification of chronic psychoses types I and II and platelet serotonin levels. Apropos of 38 cases].

The authors have examined, within a population of 38 patients, all suffering from chronic psychosis, the concentration of serotonin in the blood platelets as a function of a psychopathologic classification. The 38 patients, 17 men and 21 women, with a mean age of 46 years, diagnosed as schizophrenics (INSERM classification) were categorized according to their specific psychosis (types I and II of J. Guyotat) on examination of their clinical reports by two independent clinicians.