Adrenaline increases the "alertness" of the nervous system, meaning it's ready to trigger muscle contraction. It also increases the amount of blood flow and changes the tension of the muscles, which, ...

Add Yahoo as a preferred source to see more of our stories on Google. Though eyelid twitching (technically called myokymia) can feel disconcerting, the good news is that it’s typically fleeting and ...

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 ...

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 ...

Eye twitching is usually harmless and triggered by stress, fatigue, screen strain, caffeine, or dry eyes. Here are some ...