What is the cause of diarrhea?

Question
Hello doctor,
I have had diarrhea for 1-2 months, and there are no signs such as abdominal pain, going to the toilet continuously... I go to the toilet once a day, the stool is usually loose, double when it is water and has a fishy smell. Don't know what causes diarrhea? Ask your doctor for advice.
Nguyen Khanh Duy (1999)
Answer
Answered by Master, Doctor Vu Tan Phuc - Gastroenterologist - Department of Examination & Internal Medicine - Vinmec Phu Quoc International General Hospital.
Hello,
With the question “What is the cause of diarrhea?” , the doctor would like to answer as follows:
Diarrhea for more than 14 days is called chronic diarrhea and there are many causes of chronic diarrhea, from diet to other inflammatory causes. To determine, the first step may have to take the stool for testing and depending on the results, there will be continued treatment. You should go to a medical facility for examination and direct advice from a specialist.
If you still have questions about diarrhea, you can go to the hospital of Vinmec Health System for further examination and advice. Thank you for trusting and sending questions to Vinmec. Wishing you lots of health.
Best regards!