Clefyd sy'n datblygu gydag amser ac sydd angen goruchwyliaeth feddygol tymor hir a moddion presgripsiwn, ac na ellir ei wella fel rheol, ye Clefyd cronig – er enghraifft arthritis, diabetes, canser a clefyd y galon.
Enghraifft o'r canlynol | disease attributes |
---|---|
Math | clefyd, ffactor risg |
Y gwrthwyneb | acute disease |
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