noun
tonic-clonic seizure
Medical term for a type of epileptic seizure characterized by stiffening (tonic) and jerking (clonic) phases. Rare in everyday language; more commonly referred to as 大発作 (grand mal seizure).
See also: 大発作
強直間代発作は、てんかんの大発作の一種です。
A tonic-clonic seizure is a type of grand mal seizure in epilepsy.
大発作 is the common term for grand mal seizure, while 強直間代発作 is a more precise medical term describing the specific phases.
Compound of 強直 (tonic, stiffness), 間代 (clonic, alternating contraction and relaxation), and 発作 (seizure, attack). A modern medical term.