sudden contractions of the muscles that may be caused by seizures.
Severe contortion of the body cause by violent, involuntary muscular contractions of the extremities, trunk and head.
Strong and involuntary contraction of the muscles.
Fits or seizures caused by abnormal electrical activity in the brain.
violent body spasms; fits or seizures.
Any violent or irregular motion.
Violent, involuntary contracting and relaxing of the muscles; a spasm.
An intense, paroxysmal, involuntary muscular contraction.
Convulsive seizure or fit.