There are many organs in the upper right abdomen of the human body. Generally, pain in the upper right abdomen has the following possibilities: if the pain in the upper right abdomen occurs within half an hour or an hour after eating, it is likely to be an ulcer in the stomach; if the pain in the upper right abdomen occurs frequently without eating or at night, it may be an ulcer in the duodenum; if the pain in the upper right abdomen occurs after eating a lot of greasy food or drinking a lot of alcohol, it may be Gallbladder stones, gallbladder polyps, cholecystitis, and cholangitis are possible. There are also some people who had chicken pox when they were small and have herpes simplex virus lurking in their bodies, which can cause herpes zoster, which can also cause pain in the right upper abdomen, and some people have a history of strenuous activity or trauma for an apparently short period of time, which can also cause pain in the right upper abdomen.