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 ...

The pain from these contractions can cause mobility limitations and a tense feeling within the muscle, he says. While they’re usually harmless, muscle cramps are undoubtedly uncomfortable.

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 ...

The pain from these contractions can cause mobility limitations and a tense feeling within the muscle, he says. While they’re usually harmless, muscle cramps are undoubtedly uncomfortable.

Such movement can be uncomfortable and inconvenient, but it isn't usually painful. Muscle spasms, on the other hand, are prolonged muscle contractions that are often painful.

DEAR DR. ROACH: I’m a generally healthy 60-year-old man. Last week, I had some abdominal cramping, and while I was on the toilet, I noted the abrupt onset of a strange feeling in my chest as well as ...

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 ...

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.