The authors assess the results of several studies, fundamental or clinical with therapeutic tests, to demonstrate a possible role of prostaglandins--specially of a possible lack of PGE1--in the pathogeny of certain forms of schizophrenia. The heterogeneousness of the results leads one to think there's heterogeneousness of the illness. Meanwhile, in certain cases, the contribution of a direct precursor of PGE1 the GLA, has given possible noticeable clinical results, mainly with deficiency symptoms.