A seizure is an abnormal electrical discharge of a group of brain cells. It can cause different symptoms, depending on the location of the seizure and the spread of the electrical activity through the brain.
A person has epilepsy when he/she has more than one episode of seizures, or has a high risk of having recurrent seizures.
People who suffered a stroke, brain injury, infection or tumour can have epilepsy. In around half the cases, a cause cannot be found.
Triggers of seizures in patients with epilepsy include stress, lack of sleep, menstruation, concurrent infection and skipping medications.