The right underarm rib hurts when pressed. The treatment should be determined according to the cause of the pain, and the common causes are: external abrasion, bone fracture, and skin disease. 1. External abrasion: If there is an external abrasion on the right underarm rib cage, the wound may be inflamed. Patients can take amoxicillin, cephalosporin, roxithromycin dispersible tablets, or apply mupirocin ointment, erythromycin ointment to eliminate inflammation. 2. Fracture: if the patient has recently engaged in high physical labor, does not exclude the fracture, we need to surgical treatment; if the soft tissue, muscle injury, you can use Yunnan Baiyao, safflower oil to relieve pain and remove blood stasis. 3. Skin diseases: if infected with sebaceous cysts, herpes, you can take oral cephalosporin, minocycline; if there is no improvement, it is recommended to seek medical treatment. The use of drugs or treatment should be under the guidance of a doctor, not blind treatment.