The uncomfortable swelling under the right rib cage can be seen in gallbladder stones, chronic cholecystitis, hepatic space-occupying lesions, liver abscess, pleurisy and so on. 1. Gallbladder stones: the gallbladder is located in the right upper abdomen under the ribs, one of the main symptoms of gallbladder stones is distension, hidden pain, the patient may consciously feel a sense of tightness and distension under the right ribcage, and the acute attack is manifested as severe pain, nausea, vomiting, and fear of cold. 2. Chronic cholecystitis: the common symptoms of chronic cholecystitis are vague pain in the right upper abdomen, fullness and discomfort after meals, belching (hiccups) and so on. 3. Hepatic space-occupying lesions: the liver is located in the right upper abdomen, and when there are large cysts, hemangiomas, malignant tumors and other space-occupying lesions in the liver, the patients often feel stuffy and uncomfortable under the right rib cage. 4. Liver abscess: Liver abscess is usually characterized by dull pain in the liver area of the right upper abdomen, accompanied by fever, nausea, vomiting and other symptoms. 5. Pleurisy: when there is inflammation below the right pleura, it can also manifest as stuffy discomfort below the right rib cage. There are many other causes of discomfort below the right rib cage, it is recommended to go to the hospital in time for further abdominal ultrasound and other related examinations to clarify the cause and timely treatment.