Sudden, brief, involuntary muscle jerks, a bit like the kind everyone has when a foot or leg suddenly jerks in bed. May be mild and affect only part of the body, or be strong enough to throw the child abruptly to the floor. May occur as a single seizure or a cluster of seizures.
Myoclonic seizures are rapid, brief contractions of bodily muscles, which usually occur at the same time on both sides of the body. Occasionally, they involve one arm or a foot. People usually think of them as sudden jerks or clumsiness. A variant of the experience, common to many people who do not have epilepsy, is the sudden jerk of a foot during sleep.
What to Do:
First aid is usually not needed. However, a person having a myoclonic seizure for the first time should receive a thorough medical evaluation.