paroxysms

A remedy possessing the property of preventing the return of periodic paroxysms, or exacerbations, of disease, as in intermittent fevers.

marked by paroxysms of chills and fever

n an acute infectious disease occurring in epidemic form and featuring paroxysms of pain (usually in the chest) n reflex contraction of the sphincter muscle of the iris in response to a bright light (or certain drugs) causing the pupil to become smaller

accompanied by or of the nature of paroxysms

-- applied to a periodical disease whose paroxysms return at an earlier hour at every repetition.