A muscle spasm, also known as a cramp, twitch or charley horse, is the sudden, involuntary forced contraction of a muscle. Here are the main causes.

If your abs are sore but you haven’t worked out recently, it’s time to explore other causes for the pain. Read about the common conditions that cause similar symptoms and what your treatment options ...

BOSTON — Dr. Mallika Marshall is answering your medical questions. Norma on Facebook is wondering if her medication is causing muscle cramps, asking "I get really bad muscle cramps at night. I ...

Muscle spasm results from inflammation that occurs when a muscle is overstretched or torn. It begins as a muscle strain, which doesn't sound like a serious injury, but it can cause severe low back ...

You might get muscle pains or body aches during fasting from a lack of certain nutrients, dehydration, or skipping stretching ...

If the levels of one mineral are too low or too high, the levels of the other will be affected. This can cause muscles to become weak or contract too much, leading to painful muscle cramps and spasms.

Dion revealed in a video posted to Instagram that she has stiff person syndrome, a rare autoimmune disorder that can cause stiffness and muscle spasms. She postponed and canceled several of her ...