Seizures and epilepsy can cause depression, anxiety or other mood changes, as well as cognitive learning problems, insomnia and unexplained injuries, states the Epilepsy Foundation. An epileptic person may also find he is simply unable to function well in school or work. Severe cases can even become fatal.
Side effects may be due to the seizures, or they might be any number of factors, explains the Epilepsy Foundation. Medical treatments for epilepsy or other conditions might cause these side effects, or they might stem from whatever is causing the epilepsy itself. An epileptic individual is recommended to see a doctor if any of these side effects occur.