There are several possible causes of hidden pain under the ribs on the right side in men: 1. Trauma: If there is trauma, the possibility of rib fracture needs to be ruled out. 2. Hepatobiliary system diseases: A series of problems such as chronic hepatitis, cirrhosis, cholecystitis, gallstones, etc., can cause pain in the right subcostal liver area, with cholecystitis being the most common. 3. Herpes zoster: Occurs under the right rib, but herpes zoster is usually more painful and can be found in distinct clusters on the skin. It is easy to identify the obvious clusters of herpes on the skin.4. Costal chondritis: the cause is often unknown, it is a sterile inflammation of the ribs, usually accompanied by pain when pressed, and the pain increases when coughing and sneezing, usually without treatment, most of the disease is self-limiting, and when the pain is obvious you can take some oral non-steroidal anti-inflammatory drugs.