Convulsion

A convulsion is a medical condition where the body muscles contract and relax rapidly and repeatedly, resulting in uncontrolled shaking.^[1] Because epileptic seizures typically include convulsions, the term convulsion is often used as a synonym for seizure.^[1] However, not all epileptic seizures result in convulsions, and not all convulsions are caused by epileptic seizures.^[1][2] Non-epileptic convulsions have no relation with epilepsy, and are caused by non-epileptic seizures.^[1]

Convulsions can be caused by epilepsy, infections (including a severe form of listeriosis which is caused by eating food contaminated by Listeria Monocytogenes), brain trauma, or other medical conditions.^[2] They can also occur from an electric shock or improperly enriched air for scuba diving.^{[1][failed verification]}

The word fit is sometimes used to mean a convulsion or epileptic seizure.^[3]