noun which may take the genitive case particle 'no', noun
paroxysmal; ictal
Medical term describing conditions or events that occur in sudden, episodic attacks, such as seizures or arrhythmias. Used attributively with の.
Paroxysmal arrhythmia was observed.
Ictal activity of epilepsy was confirmed on the EEG.
benign paroxysmal positional vertigo; BPPV
Compound of 発作 (attack, seizure) + 性 (nature, characteristic). The exact historical derivation is uncertain, but the term follows a common pattern in medical terminology.