Epilepsy is a nervous system condition that causes recurring, unprovoked seizures. Children and adults can have repeated seizures. Is caused by unusual electrical activity in the brain that can change someone's behavior, movement, or feelings. There are treatments for many types of epilepsy (EP-eh-lep-see). Some causes for epilepsy are: kids will outgrow the condition, gene changes, brain injury, tumors, problems with the brain developed before birth, abnormal blood vessels,