Jisho

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Noun
1. chronic disease; chronic illness; old complaint
Noun
2. bad habit; intractable habit
Wikipedia definition
3. Chronic (medicine)A chronic condition is a human health condition or disease that is persistent or otherwise long-lasting in its effects. The term chronic is usually applied when the course of the disease lasts for more than three months. Common chronic diseases include arthritis, asthma, cancer, COPD, diabetes and HIV/AIDS. In medicine, the opposite of chronic is acute. A chronic course is further distinguished from a recurrent course; recurrent diseases relapse repeatedly, with periods of remission in between.
Read “Chronic (medicine)” on English Wikipedia
Read “持病” on Japanese Wikipedia
Read “Chronic (medicine)” on DBpedia

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