Severe abdominal pain, constipation, diarrhea after fasting for 1 day, what's wrong?

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Question
Hello doctor,
After fasting for 1 day, the abdomen often has severe pain, sometimes constipation, sometimes diarrhea, but sometimes the pain goes up and down. The doctor asked me if I had severe abdominal pain, when I was constipated, when I had diarrhea, what was wrong with fasting for 1 day? I thank you doctor.
Anonymous customer
Answer
Answered by Master, Specialist II Phan Thi Minh Huong - Gastroenterologist - Department of Medical Examination & Internal Medicine, Vinmec Danang International General Hospital.
Hello friend,
With the question "What's wrong with severe abdominal pain, constipation, diarrhea after fasting for 1 day? ", the doctor would like to answer as follows:
Fasting causes the stomach to increase acid secretion, increasing intestinal motility, so it will cause abdominal pain. In case you fast for 1 day but you do not specify whether you use drinking water on that day or not, in case if you still drink water such as filtered water, milk, oranges, .. are very easy to have diarrhea . And if you do not drink at all, it is easy to become constipated due to lack of water
First of all, the doctor does not know the reason why you have to fast for 1 day continuously, if you do not fast, do you have the above phenomenon, ... So I can't give you exact advice. You are following a diet or a cure. Therefore, you should visit a Gastroenterologist, tests may need to do abdominal ultrasound, gastroscopy and colonoscopy to be examined and consulted by doctors.
In the process of eating, you should not do things that are contrary to normal physiology.
If you still have questions about severe abdominal pain, constipation, diarrhea after 1 day of fasting, you can go to a 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!

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