Convulsion

A convulsion is a sudden, involuntary, and often violent contraction of a muscle or group of muscles. The severity of a convulsion can range from mild twitching to a full body seizure, which can be violent and have a dangerous outcome. It is a sign of an underlying disorder such as epilepsy, encephalopathy, or meningitis and can result from a variety of causes including high fever, drug or alcohol withdrawal, or a head injury. Prompt medical attention is important, as recurrent seizures can cause long-term damage to the brain if left untreated.