(The upper section of the trapezius muscle is located on the back of the neck and top of the shoulder.) The trapezius muscle now may be working more than it is used to. This overuse may cause ...
These common causes of muscle spasms are usually minor conditions that easily resolve. But you should talk with your doctor if you suspect a medication is causing your muscle twitching.
An esophageal spasm occurs when the esophageal muscles contract abnormally. (These muscles are located in the esophagus, the tube that carries food to the stomach.) Often triggered by eating ...
In addition, it can involve muscle spasms, including lockjaw. Cancer and some cancer treatments (e.g., surgery, radiation) can cause injuries to parts of the jaw that control movement. There are a few ...
Short term vibration of the dorsal neck muscles (10–35 s) is known to induce involuntary movements of the head in patients with spasmodic torticollis. To investigate whether neck muscle vibration ...