tonic–clonic seizure

a seizure characterized by both tonic and clonic motor movements. In the tonic phase, the muscles go into spasm and the individual falls to the ground unconscious; breathing may be suspended. This is followed by the clonic phase, marked by rapidly alternating contraction and relaxation of the muscles, resulting in jaw movements (the tongue may be bitten) and urinary incontinence. Formerly called grand mal seizure.

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Psychology term of the day

December 20th 2024

necrophobia

n. a persistent and irrational fear of corpses. See also thanatophobia.