Lockjaw happens when your jaw muscles tighten up so much that you can't open your mouth properly. Tetanus is a serious bacterial infection that can cause lockjaw and muscle spasms. TMJ disorders can ...

THE connection between the (lower) jaw and the skull is technically known as the temporomandibular joint (TMJ). It functions through five pairs of muscles ...

Add Yahoo as a preferred source to see more of our stories on Google. Many of us have felt a muscle in some part of our body suddenly and involuntarily tighten, causing a twitch or even severe cramp.

Every doctor wants to see a smile on a patient’s face, but there is one that no doctor ever wants to see: risus sardonicus, sometimes known as the sardonic grin or the devil’s smile, the cruel mark of ...

Jaw pain? Look in the mirror. Does your face seem a bit asymmetrical? Does the gap in the two front teeth on top line up with the gap in the two on the bottom? Put three fingers into your mouth ...

Ms. D’s muscle spasms were improved after administration of IV diazepam (Valium). In the critical care unit, Ms. D was observed closely for cardiopulmonary deterioration. Serial vital capacity ...

A muscle spasm — also known as a charley horse, muscle cramp or twitch — is a sudden, involuntary movement in one or more muscles. Common causes include stress, exercise, or dehydration, but nerve ...

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 ...

‌Hemifacial spasm is a disorder of the nerves and muscles that causes nonpainful involuntary twitching on one side of the face. Many people refer to hemifacial spasms as lip muscle spasms. Hemifacial ...

Dehydration may be one cause of muscle cramps, and some evidence suggests that electrolyte imbalances also contribute to them. Muscle cramps are painful, involuntary contractions of the muscles that ...