Dyspepsia is the most common symptom phenomenon, and is often accompanied by abdominal pain, some have nausea, diarrhea, etc. Occasionally there are patients will be persistent diarrhea, a few patients may also be constipated, persistent dyspepsia will also lead to loss of appetite, no appetite, which leads to the body's lack of nutrients or nutrients are not well absorbed, and may even cause weight loss, body thinning and so on. Clinical manifestations