grand mal

(noun) epilepsy in which the attacks involve loss of consciousness and tonic spasms of the musculature followed by generalized jerking. Synonyms: grand mal epilepsy, grand mal, generalized epilepsy, epilepsia major.

(noun) a seizure during which the patient becomes unconscious and has convulsions over the entire body. Synonyms: grand mal, generalized seizure, epilepsia major.