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.

World-renowned singer Celine Dion shared a vulnerable moment of her experience with stiff-person syndrome in a raw scene in the new documentary, “I Am: Celine Dion.” The film, released Tuesday on ...

A back spasm involves a sudden, involuntary muscle contraction that can be set off by something as routine as lifting a bag or sitting for too long. Muscle fatigue, dehydration, and nerve irritation ...

Esophageal spasms cause painful chest contractions and affect swallowing and digestion. Medications and peppermint oil can help relieve esophageal spasm symptoms. Contact a doctor if spasms last more ...

Add Yahoo as a preferred source to see more of our stories on Google. World-renowned singer Celine Dion shared a vulnerable moment of her experience with stiff-person syndrome in a raw scene in the ...

World-renowned singer Celine Dion shared a vulnerable moment of her experience with stiff-person syndrome in a raw scene in the new documentary “I Am: Celine Dion.” Subscribe to read this story ...