Yu Fu (兪附)

一病愈之後。雖經廿日。不得輙喫鮮魚完生菜菓。并飲水及洗浴。房室強行。步當風雨。若有過犯。霍亂必發。更亦下痢。所謂勞發。〈更動之病名曰勞發。〉兪附扁鵲。豈得禁斷。

After the illness has healed, even when twenty days have passed, the sick must not be quick to eat fresh fish or meat, or raw vegetables or fruit. They must not drink water or bathe, insist on sex, or walk out in wind and rain. Anyone who breaks these rules will surely fall ill with sudden vomiting and diarrhea, and the diarrhea will come back as well. This is what is called rōhatsu, a relapse brought on by strain. (An illness that stirs up again is called rōhatsu.) Then not even Yu Fu or Bian Que could stop it.