Muscle ultrasound may be a useful tool in diagnosing later-onset spinal muscular atrophy (SMA), according to a new study that compared the technique to physical examinations and electromyography (EMG) ...

I am seeing a husband, 46 years old, and wife, 37 years old, as patients. The husband developed fasciculations in his upper and lower extremities 1 year ago. Because of associated neck and back pain, ...

Doctors identify these movements as 'fasciculations', because they occur when individual nerve fibers, which control small muscle groups activate independently to produce brief muscle contractions.

Dear Doctor: I am a 79-year-old woman, and I have in the past had night cramps that went away when I stamped my foot. When it got worse, including a burning sensation, a muscle relaxant helped. It’s ...

You’re relaxing on the sofa when suddenly your eyelid starts twitching. Or perhaps it’s a muscle in your arm, your leg, or your foot that begins to spasm – sometimes for a few seconds, sometimes for ...