Medically reviewed by Jennifer Steinhoff, MD Key Takeaways Muscle twitching is often caused by stress, lack of sleep, or too much caffeine.  If muscle twitching happens with muscle weakness or wasting ...

People with uncontrolled movement problems can have a harder time doing everyday tasks such as speaking, reading, writing, and cooking, which can cause a loss of independence. This may cause people to ...

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 twitching of the ...

University of Arizona researchers have revealed new insights into the neurobiological cause of the involuntary, uncontrollable movement disorders that develop in patients with Parkinson’s disease (PD) ...