Persistent hidden pain in the upper abdomen and right upper back at night may be caused by peptic ulcer, pancreatitis, gallbladder stones and other diseases. 1. Peptic ulcer: when the patient suffers from peptic ulcer disease, especially duodenal ulcer, especially the back wall penetrating ulcer, if combined with perforation, there may be the phenomenon of the epigastric abdomen and the right upper back persistent hidden pain at night. 2. Pancreatitis: If you suffer from pancreatitis (often caused by alcoholism and overeating at night), you may have persistent pain in the upper abdomen and right upper back at night. 3. Gallbladder stones: If the patient suffers from gallbladder stones, he or she may experience constant pain in the upper abdomen and right upper back at night. The above are only some of the common causes. If you have persistent pain in the upper abdomen and right upper back at night, you should go to the hospital in time, get a clear diagnosis and follow the doctor’s instructions for standardized treatment.