What is the dull ache in the pit of the stomach upper part

There is a dull pain in the upper stomach pit, which may be caused by gastric ulcer, accompanied by acid reflux, chest tightness and other symptoms. Secondly, when suffering from heart disease, such as coronary heart disease, angina pectoris, etc., there will also be dull pain in the upper stomach pit. In addition, when Helicobacter pylori infection, and spleen and stomach weakness, there will also be dull pain in the upper stomach pit.