Costochondritis
Open DocumentCostochondritis is inflammation of a rib or the cartilage that connects a rib to your breastbone (sternum). It causes tenderness, and sometimes chest pain may be sharp or aching, or it may feel like pressure. Pain may get worse with deep breathing, movement, or exercise. In some cases, the pain is mistaken for a heart attack. Despite this, the condition is not serious. Read on to learn more about the condition and how it can be treated.