Seizure

A sudden episode of abnormal electrical activity in the brain. Recurrent seizures occur in epilepsy. Seizures may be partial or generalized. In a partial seizure, the abnormal activity is confined to one area of the brain. Symptoms include tingling or twitching of a small area of the body, hallucinations, fear, or déjà vu. In a generalized seizure, the abnormal activity spreads through the brain, causing loss of consciousness. Causes of seizures include head injury, stroke, brain tumour, infection, metabolic disturbances, withdrawal in alcohol dependence, or hereditary alcohol intolerance. In children, high fever may cause seizures. Anticonvulsant drugs can control seizures or reduce their frequency.