Medically reviewed by Nicholas R. Metrus, MD Key Takeaways Too much caffeine can cause lip twitching, and cutting back on ...

Medically reviewed by Jennifer Steinhoff, MD Key Takeaways Muscle twitching is often caused by stress or a lack of sleep and ...

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 ...

Tweaked by a muscle twitch? From an uncontrollable fluttering eyelid to a pulsing calf muscle, these small, rapid involuntary muscle contractions may happen at any time -- and can be annoying.

Why are we asking for donations? Why are we asking for donations? This site is free thanks to our community of supporters. Voluntary donations from readers like you keep our news accessible for ...

A review on autoimmune neurological diseases reveals what occurs in our body when the immune system, by mistake, produces ...

Hemifacial spasms happen when a blood vessel puts excess pressure on a facial nerve, per the National Institute of Neurological Disorders and Stroke (NINDS). They can also be caused by external nerve ...

After a grueling CrossFit workout on a hot Summer morning that involved kettlebell swings, goblet squats, and about 100 walking lunges, my lower body was toast. But what was weird was that my left ...

Cranial nerves are pairs of nerves that connect your brain to different parts of your head, neck, and trunk. Each nerve has a corresponding roman numeral between i and xii. Your cranial nerves are ...

Your groin area is the region between your lower abdomen and your upper thighs. A pinched nerve in the groin happens when tissues — like muscles, bones, or tendons — in your groin compress a nerve.

The cranial nerves are a set of twelve pairs of nerves that travel to and from the brain. Each has a different function. For example, the olfactory nerve is essential for detecting smells. The ...