noun, noun or participle which takes 'suru', intransitive verb
worsening; exacerbation; aggravation
Medical term for the worsening or aggravation of a disease or condition. Used as a noun or with する to mean 'to worsen'.
症状の増悪が見られた。
An exacerbation of symptoms was observed.
病気が増悪する前に治療を始める必要がある。
Treatment must be started before the disease worsens.