[Comorbidity in children with epilepsy. I: Behaviour problems, ADHD and intelligence].

A search of the literature of studies on comorbidity in children with idiopathic and cryptogenic epilepsy revealed very few prospective longitudinal studies. The tendency was that children with epilepsy had a greater prevalence of comorbidity than healthy children, but more prospective longitudinal studies are needed to show the exact prevalence, grade and character. Behaviour problems seem to occur before the children have seizures, i.e. the behaviour problem seems to exist before the onset of epileptic seizures. There was no sound evidence for the prevalence of comorbidity in the form of ADHD. Children with epilepsy seem to have normal IQ.