What reason is a little pain on the right side of the upper abdomen pit

A little pain in the right side of the upper abdomen pit may be caused by acute gastritis, chronic gastritis, gastric ulcer, duodenal ulcer, cholecystitis and other digestive tract diseases, and may also be caused by coronary heart disease, myocardial ischemia, atherosclerosis and other reasons. It is recommended that the symptoms of the right side of the upper abdomen pit are obvious, and it is best to go to the hospital for examination.