###Human: I have diarrhea following constipation for a long time. Why? ###Assistant: Hi. Your history fits into the acid peptic disease. I do not find any sign of cancer over here (attachment removed to protect patient identity). I would recommend you the following. A combination of Pantoprazole and Domperidone once daily for a few days. A good probiotic, to take a soft and bland diet, to walk after all meals. I would also recommend you to get your thyroid profile checked.