Below the right rib cage is where the liver and gallbladder are located, and pain is most commonly associated with cholecystitis. Cholecystitis can cause pain under the right rib cage, which often spreads to the right shoulder and right back. Acutely, a fever may be present, and simple biliary colic can resolve quickly. In addition to the gallbladder, the liver is also in this area, but rarely do liver lesions cause acute pain, except in severe cases of hepatocellular carcinoma where irritation of the hepatic pericardium can cause significant pain. Abdominal pain under the ribs on the left side is most often seen with pancreatic lesions, and of course kidney disease such as kidney stones can also cause pain under the ribs, but it is often accompanied by discomfort in the back. Although the pain is in one area, it may be due to different causes. If it persists without relief, it is recommended to go to the outpatient clinic in time.