Pain on the sides of the rib cage can be due to various reasons. This pain causes problem in breathing or any arm movement ...

Other tests may be used as part of the evaluation, including: Costochondritis is often confused with Tietze syndrome, a benign condition that causes the swelling of cartilage in the rib cage.

When this cartilage becomes inflamed through physical ... the blood work for inflammation does show reactivity and the rib cage is swollen, something that is not present with costochondritis.