What Causes Muscle Spasms? Muscle spasms can be caused by many different things coming together for example when you get a lupus muscle spasm its from working the lupus muscle harder than you would on an normal day. Or if you get a muscle spasm on left side of abdomen then you may have done one too many sit-ups that day. What causes lung spasms? Well, smoking is the number one cause of lung spasms and if you get a vascular spasm in the eye, it maybe caused by the same thing. When it comes to muscle spasms heat or ice are both ways to calm the nerves in the muscle spasm area. Many different experiences have been reasons for or causes of muscle spasms and leg cramps for continuous muscle spasms for weeks. Muscle spasms in abdomen are painful, so it is important to know how to stop muscle spasms. The important thing is to rejuvenate the body with calcium even by drinking a simple glass of milk. There are different kinds of spasms such as, bladder spasms, muscle spasms, stomach spasms, back spasms, esophageal spasms, and even infantile spasms in little babies. They are all temporary and treatable, visit your local family doctor for more information on stopping muscle spasms.