relapses
re-lap-ses
verb
Returns to a previous, worse state after improvement, especially in health or behaviour.
"The patient relapses after treatment."
noun
Instances of returning to a worse state, especially after a period of recovery.
"The patient suffered several relapses."
Thesaurus
Synonyms: recidivate, relapse, fall back, lapse, retrogress, regress, lapsing, backsliding, reversion, reverting, relapsing, get worse
Antonyms: bounce back, get over, get well