Diaphragm spasms feel like twitches in the area between the chest and the abdomen. They can occur with or without pain. Possible causes include an injury, nerve irritation, or a rare condition known ...

Pain in the diaphragm — the muscle that separates the chest from the abdomen — can happen for many reasons, such as an injury, pregnancy, and pneumonia. The diaphragm moves downward so the lungs can ...