Structured psychiatric interviews were administered to 60 children with com
plex partial seizure disorder (GPS), 40 children with primary generalized e
pilepsy with absences (PGE), and 48 control children, aged 5 to 16 years. S
ignificantly more patients with epilepsy had psychiatric diagnoses compared
with the control children. There were no statistically significant differe
nces, however, in the number of patients with GPS and PGE with psychiatric
diagnoses. Other than a schizophrenia-like psychosis found only in the pati
ents with CPS, the two groups of patients had similar psychiatric diagnoses
. The presence of psychopathology was related to significantly lower IQ sco
res and socioeconomic status, but not to seizure-related factors. These fin
dings suggest that the psychopathology of children with CPS and PGE reflect
s different subtle neuropsychological deficits.