The co-occurrence of epilepsy in people with intellectual disabilities (ID) and other developmental disabilities (DD) has received attention because it has a significant negative impact on health, well-being, and quality of life. The current research investigating the frequency and form of epilepsy in children with ID and DD is reviewed, with…

Epileptic encephalopathies are progressive clinical and electroencephalographic syndromes where deterioration is thought to be caused by frequent seizures and abundant EEG epileptiform activity. Seizures occur in approximately 10-15% of children with pervasive developmental disorders (PDD) and 8-10% have epileptiform EEG abnormalities without…

Tuberous sclerosis is a genetic condition that is strongly associated with the development of an autism spectrum disorder. However, there is marked variability in expression, and only a subset of children with tuberous sclerosis develop autism spectrum disorder. Clarification of the mechanisms that underlie the association and variability in…