Add Yahoo as a preferred source to see more of our stories on Google. Q: What is stiff person syndrome with which Celine Dion was diagnosed? A: Stiff-person syndrome (SPS) is a rare neurological ...

Add Yahoo as a preferred source to see more of our stories on Google. Though many people experience muscle twitching, it's often incorrectly identified as a muscle spasm. While both are involuntary ...

Hemifacial spasm (HFS) is a neurological disorder manifested by twitching on one side of the face due to involuntary contractions of the eyelid and other facial muscles. It usually begins gradually ...

The trapezius is a large band of muscles across the back, shoulders, and neck. Trigger points are raised spots along a band of muscle. They can be caused by exercise, inactivity, or poor posture, like ...

Though many people experience muscle twitching, it's often incorrectly identified as a muscle spasm. While both are involuntary contractions of a muscle, muscle spasms and muscle twitching aren't ...