'Convulsions' in the Bible

After throwing him into convulsions, the unclean spirit cried out with a loud voice and came out of him.

It shrieked, threw him into terrible convulsions, and came out. The boy looked so much like a corpse that many said, "He is dead!"

A spirit seizes him, and he suddenly screams; it throws him into convulsions and causes him to foam at the mouth. It hardly ever leaves him alone, torturing him severely.

As the boy was approaching, the demon threw him to the ground and shook him with convulsions. But Jesus rebuked the unclean spirit, healed the boy, and gave him back to his father.