AbstractIt has been proposed that schizophrenia is a prostaglandin-deficiency disease and also that it is a disease of prostaglandin excess. New evidence is reviewed which suggests that 'classic' schizophrenia is due to a specific deficiency of prostaglandin E1 while certain toxic and vitamin-deficiency psychoses may be due to a broader spectrum of prostaglandin deficiency. There is also good evidence that a particular schizophrenic subgroup, which includes catatonic schizophrenia but may not be confirmed to it, is associated with an excess of prostaglandins. Part of the explanation may be that prostaglandin E1 has a 'bell-shaped' dose-response curve with high concentrations having effects similar to those of prostaglandin deficiency.
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