relapse into

relapse into (something)

To return to a former state or condition after an apparent or partial recovery. The patient relapsed into a psychotic state due to an incorrect prescription of medication. He had been sober for nearly 20 years, but he relapsed into heavy drinking after the death of his daughter.
See also: relapse

relapse into something

to experience a return to a worse condition. Valerie relapsed into a coma in the afternoon. Mary relapsed into her depression after a brief period of normalcy.
See also: relapse
References in classic literature ?
At any small surprise of the senses he would start visibly and sometimes turn pale, then relapse into a melancholy apathy deeper than before.
A memory center of the brain acts as an ignition switch for relapse into cocaine addiction, scientists suggest in the May 11 SCIENCE.