The reasons for patients to have vague pain and discomfort in the liver are summarized as follows: firstly, patients will have vague pain due to tension in the hepatic pericardium because of severe fatty liver. Secondly, some patients with chronic cholecystitis and gallbladder polyps may also experience vague pain in the liver area as well as back swelling and discomfort due to biliary colic. For some patients with hepatitis, there is also a possibility of liver enlargement, hepatic pericardium tension, and occult pain due to the occurrence of acute hepatitis. However, in some patients with vague pain in the liver area, accompanied by bleeding in the mouth when brushing teeth in the morning, it is necessary to further investigate the ultrasound or CT of the upper abdomen, as well as draw blood to check the blood routine and liver function to see if there are any space-occupying changes in the liver. If you have hepatitis B, you need to have regular checkups, including alpha-fetoprotein, CT of the upper abdomen, and liver function. Some patients with liver tumors may also have vague pain and discomfort in the liver or swelling and pain in the back.