Psychogenic movement is an unwanted muscle movement such as a spasm or tremor that is caused by an underlying psychological condition....

Dystonia is a movement disorder in which a person's muscles contract uncontrollably. The contraction causes the affected body part to...

What is Multiple Sclerosis? MS is a progressive, “immune-mediated” disorder. That means the system designed to keep your body healthy...

What is cervical dystonia? Cervical dystonia is a condition that causes the muscles in your neck to tighten or spasm without your...