A muscle spasm, also known as a cramp, twitch or charley horse, is the sudden and involuntary forced contraction of a muscle. Experts weigh in on what's behind this sudden discomfort, when to be ...

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 ...

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 ...

Do you know dystonia and muscle spasms are both conditions that involve involuntary muscle contractions, but they differ significantly in their causes, symptoms, duration, and the way they affect ...

Discover the science behind hypnic jerks, involuntary muscle spasms during sleep, and how to manage them effectively.

Hemifacial spasm (HFS) is a rare movement disorder that causes involuntary muscle contractions on one side of the face. It typically starts with painless but annoying twitching around one eye.

Blepharospasm describes a condition where a person experiences an involuntary spasm of the muscles surrounding the eyelid. “Blepharo” refers to the eyelids, while “spasm” describes ...

The sudden, involuntary spasm seems to come out of nowhere, but in reality, hiccups are usually triggered when something irritates your diaphragm, the muscle just below your lungs that’s ...

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.