A vague pain in the right hypochondrium is sometimes seen in patients with hepatitis B. This can also be called dystocia, because the area under the right rib cage is also called the right hypochondrium, which is in the upper right abdomen. The pain in this area may be caused by liver damage caused by the hepatitis B virus, so it is important to check liver function to determine if there is an increase in transaminases. Sometimes the elevation of transaminases is not too severe, and the vague pain may not appear. Therefore, sometimes the vague pain may be due to more serious liver complications, such as hepatocellular carcinoma or cholangiocarcinoma, which can also appear as vague pain in the right side of the ribs. Liver ultrasound, liver CT, and fetoprotein should be checked to determine the occurrence of liver cancer.