Risks of occurrence of psychoses in relation to the types of epilepsies and epileptic seizures.

: The possible existence of the risks of occurrence of psychoses was examined in relation to the types of epilepsies and epileptic seizures. This study consisted of two investigations: 1) A study of 879 epileptic patients was conducted in which the incidence of psychoses in the different types of epilepsies was surveyed; the result was that the incidence in temporal lobe epilepsy was the highest, being relatively higher than that of other (non-temporal lobe) partial epilepsies but not significantly different from that of generalized epilepsies. 2) A comparative study was carried out on 96 patients with temporal lobe epilepsy in which 48 were psychotic and another 48 were non-psychotic which served as a control group. The differences of seizure symptomatology between the two groups were compared. The results were that the psychotic group was found to exhibit at a significantly higher rate generalized tonic-clonic convulsion and compound seizure manifestations in comparison with the non-psychotic group. The results appear to support the fact that generalizing mechanisms of temporal lobe epileptic manifestations are closely related to a physiopathogenic factor influencing psychoses.