Dystonia is a neurological movement disorder characterized by involuntary muscle contraction leading to abnormal postures and twisting movements. Several types of dystonia are known and they are classified according to age of onset, distribution of dystonia, and cause. The primary dystonias are diseases that are characterized with only dystonia as their clinical feature. Primary dystonias are classified as early onset or adult onset disease.
Watch the following segment from “Your Fantastic Mind,” which focuses on dystonia and features political correspondent Jamie Dupree: