Researchers uncovered new findings about involuntary muscle movements that come with long-term administration of Parkinson's drug levodopa. University of Arizona researchers have revealed new insights ...

Anyone who has had tight muscles or a muscle spasm knows how uncomfortable and limiting these experiences can be. But when you have spasticity, which causes tight muscles and uncontrollable ...

We asked four neurologists which symptoms you should never ignore—and what they might signal.

Spasticity is a symptom or complication of many different neurological disorders in which normal muscle movement patterns are disrupted, and muscles contract, or tighten, involuntarily. In a healthy ...

For most people, swallowing is second nature, but how does it occur, and why do some people have difficulty with it? Researchers at Kyushu University in Japan have started to tackle these questions by ...