[par-uh k-siz-uh m] /ˈpær əkˌsɪz əm/
any sudden, violent outburst; a fit of violent action or emotion:
paroxysms of rage.
Pathology. a severe attack or a sudden increase in intensity of a disease, usually recurring periodically.
an uncontrollable outburst: a paroxysm of giggling
“sudden attack, convulsion,” early 15c., from Middle French paroxysme (16c.), earlier paroxime (13c.), from Medieval Latin paroxysmus “irritation, fit of a disease,” from Greek paroxysmos “irritation, exasperation,” from paroxynein “to irritate, goad, provoke,” from para- “beyond” (see para- (1)) + oxynein “sharpen, goad,” from oxys “sharp, pointed” (see acrid). Non-medical sense first attested c.1600. Related: Paroxysmal.
paroxysm par·ox·ysm (pār’ək-sĭz’əm)
par’ox·ys’mal (-ək-sĭz’məl) adj.
- Paroxysmal nocturnal dyspnea
paroxysmal nocturnal dyspnea n. Acute dyspnea caused by the lung congestion and edema that results from partial heart failure and occurring suddenly at night, usually an hour or two after the individual has fallen asleep.
- Paroxysmal nocturnal hemoglobinuria
paroxysmal nocturnal hemoglobinuria n. An infrequent disorder the onset of which usually occurs in the third or fourth decades of life and is characterized by periods of hemolytic anemia, hemoglobinuria primarily at night, pallor, bronzing of the skin, moderate splenomegaly, and red blood cells that are macrocytic and vary considerably in size. Also called Marchiafava-Micheli […]
noun, Pathology. 1. tachycardia that begins and subsides suddenly. paroxysmal tachycardia n. Recurrent attacks of tachycardia, having abrupt onset and termination and originating from an ectopic focus.
- Paroxysmal trepidant abasia
paroxysmal trepidant abasia n. Abasia due to spastic stiffening of the legs.