
A: Costochondritis (CC) is a fairly common cause of chest wall pain in adults in the US and around the world. According to the Mayo Clinic website:
“Costochondritis (kos-toe-KHON-dri-tis) is an inflammation of the cartilage that connects a rib to the breastbone (sternum) — a junction known as the costosternal joint. Pain caused by costochondritis may mimic that of a heart attack or other heart conditions.”