What is the reason for diarrhea for three consecutive days?

Diarrhea has been diarrhea for three consecutive days, first of all, it is considered to be caused by abdominal cold. Secondly, it is considered to be caused by acute gastroenteritis. In addition, it is not excluded that it is caused by intestinal malignant tumors. If it is caused by acute gastroenteritis, use anti-inflammatory and rehydration drugs according to medical advice. Patients with intestinal malignant tumors need to seek medical attention.