Sitting at your desk, a muscle in your leg palpitates quickly. Or a muscle under your eye flutters. These sudden twitches, known as fasciculation, occur commonly and seem random. But are these spasms ...

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) ...

Electromyography (EMG) is a diagnostic test that measures how well the muscles respond to the electrical signals emitted to specialized nerve cells called motor nerves. EMG tests are safe and pose ...

Your muscles move when nerve signals from the brain tell them to get to work. Electromyography (EMG), a diagnostic test, measures how well your muscles respond to those signals. Movement is a complex ...

Benign fasciculation syndrome is persistent twitching in one or more muscles. A person may also experience tingling or numbness. Benign fasciculation syndrome (BFS) is rare and can be confused with ...

Dear Dr. Roach: I have a 53-year-old daughter who is troubled by muscle twitches. They occur on various parts of her body, some lasting for several minutes, and others much longer. No pain is ...