复发 fùfā to recur (of a disease)
to recur (of a disease); to reappear; to relapse (into a former bad state)
How to remember 复发: 复 repeat + 发 send out = to recur (of a disease).
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How it is used
- To recur / relapse (of illness or bad habits) - 旧病复发 (jiùbìng fùfā) an old illness flares up again; 癌症复发 (áizhèng fùfā) cancer recurrence.
- Specifically something bad coming back after remission. Neutral/medical.