Hidden pain in the abdomen right in the center can be caused by a cold abdomen, enteritis, appendicitis, stomach ulcers, etc. 1. Cold abdomen: when the abdomen is cold, it may also cause hidden pain in the middle of the abdomen, and is accompanied by intestinal sounds, fast bowel movements, diarrhea and other symptoms. 2. Acute gastroenteritis: If you eat unhygienic food or eat too much spicy and irritating food, etc., it may lead to acute gastroenteritis, with symptoms such as vague pain in the middle of the abdomen, vomiting and diarrhea. 3. Appendicitis: When a patient suffers from appendicitis, it usually starts as a vague pain in the middle of the abdomen and then moves to the lower right abdomen. 4. Gastric ulcer: If the patient suffers from gastric ulcer, it is easy to have a dull pain in the middle of the abdomen, accompanied by vomiting, nausea, acid reflux and other symptoms. Patients with abdominal pain in the middle of the abdomen should go to the hospital in a timely manner, after clarifying the cause of the disease, under the guidance of the doctor for proper treatment.