a muscle contraction disorder that can affect many parts of the body. In one type of vocal dystonia called lingual protrusion dystonia, a person’s tongue can protrude when they try to speak ...

As the disorder progresses, affected people may struggle to speak and walk because of balance and coordination issues. They may also experience seizures, which usually begin when a child is ...

Communicating is something we do every day. But for some, it's not an easy task.Nearly 1 in 12 U.S. children have a speech ...

Myasthenia gravis is a neuromuscular junction disorder with a hallmark of progressive muscle weakness and frequent ...

Former bodybuilder Tony McCue began stumbling and 'dropping things' two years ago. After being diagnosed with locked-in syndrome, he can longer walk or eat.

A new study links a particular gene to the origins of spoken language, proposing that a protein variant found only in humans may have helped us develop speech.