Common disorders are as follows.
Liver diseases, as the liver is in the right abdomen, acute and chronic hepatitis, cirrhosis and liver cancer can cause pain under the right rib cage, especially in patients with hepatitis B. Pain under the right rib cage should be promptly checked and treated.
gallbladder disorders including gallstones, cholecystitis, bile duct obstruction and gallbladder tumours, all of which may cause right rib pain
intercostal neuralgia, a syndrome of different causes of intercostal nerve injury that manifests as chest, abdominal and intercostal band pain.