A seizure is a short episode of symptoms which is caused by a burst of abnormal electrical activity in the brain. Typically, a seizure lasts from a few seconds to a few minutes. (Older words for seizures include convulsions and fits.)The brain contains millions of nerve cells (neurons). Normally, the nerve cells are constantly sending tiny electrical messages down nerves to all parts of the body. Different parts of the brain control different parts and functions of the body. Therefore, the symptoms that occur during a seizure depend on where the abnormal burst of electrical activity occurs.Epilepsy is a stage of seziures .There are different types of seizures but they are broadly divided into two main types - generalised and partial. Many people associate epilepsy with generalised convulsive seizures. However, some people develop partial seizures.