You're relaxing on the sofa when suddenly your eyelid starts twitching. Or perhaps it's a muscle in your arm, your leg, or ...

Medically reviewed by Nicholas R. Metrus, MDMedically reviewed by Nicholas R. Metrus, MD Almost all of us will have experienced a fasciculation at one time or another. A fasciculation is simply a ...

Have you ever experienced an annoying, persistent twitch in your eyelid? Eye twitching — also known as myokymia — is a common phenomenon that most people encounter at some point in their lives. While ...

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 ...

In the realm of bodily quirks, few experiences are as disconcerting and curious as the sensation of your eye jumping or twitching. This phenomenon, medically referred to as myokymia, is commonly ...

Twitching at night—it’s something few of us talk about, yet it’s also a phenomenon that impacts Americans when it comes to sleep quality. And even if you feel like you’re getting enough sleep, you ...

Stress, caffeine, and sleep deprivation are all major eye-twitching culprits, since they all throw off your nervous system. You’re afraid to look the other person in the eye, but you don’t want to ...

Infectious agents can cause muscle twitching and spasms, too. The most commonly known is probably tetanus, which causes a phenomenon called lockjaw, where the neck and jaw muscles contract to the ...