If you have fibromyalgia (FMS), chest pain may be one of your symptoms. A condition called costochondritis, which causes pain around the breastbone and rib cage, could be to blame. It is caused by ...

Pain under the left rib cage is common, and several health conditions ... Overuse or acute injuries and inflammatory conditions, such as fibromyalgia, ankylosing spondylitis, and systemic lupus ...