Almost any muscle can spasm. If spasms occur in the muscles surrounding the chest, back, and shoulders, they may cause the joints and other tissues in the area to shift, leading to the sternum ...

While chest pain is the most common sign ... Other common risk factors for MVD include: Coronary artery spasms (CAS) happen when the muscles within the heart's arteries suddenly tighten ...

Muscle spasms and stiffness compound the risk of deadly falls and injuries. Muscle rigidity can also apply to muscles in the chest and diaphragm, leading to breathing failure. Some people may also ...

Hemifacial spasm (HFS) is a neurological disorder manifested by twitching on one side of the face due to involuntary contractions of the eyelid and other facial muscles. It usually begins gradually ...