Of, pertaining to, causing or accompanied by paroxysms(adjective)
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Use "paroxysmal" in a sentence
"The technique is most successful among patients whose rapid heartbeat comes and goes, a condition known as paroxysmal A-fib, says Sung Lee, director of cardiac pacing and electrophysiology at Washington Adventist Hospital in Takoma Park."
"Identification: The sudden onset of unusual movements, behaviors, or spells sometime referred to as a paroxysmal disorder may catch your attention or even be brought to your attention."
"Both the rarity and the severity of the disease make it an ideal target for Soliris, whose sole previous indication, or approved use, is for a rare blood disorder called paroxysmal nocturnal hemoglobinuria."