Tā yáchǐ zhǎng le nóngzhǒng, téng de shuì bù zháo.
He has a tooth abscess, so painful he can't sleep.
Tips
memory
脓 (nóng) = pus and 肿 (zhǒng) = swelling — literally 'pus-swelling'. Both characters carry the 月/⺼ flesh radical, marking them as body-related medical terms. If a swelling on the body has 脓, it's a 脓肿.
