Chapter 4 Restless Legs Syndrome as a Movement Disorder
Movement disorders are neurological disorders in which there is either (1) an excess of movement or (2) a paucity of voluntary and automatic movements, unrelated to weakness or spasticity. The latter group is usually referred to as hypokinesia (decreased amplitude of movement), bradykinesia (slowness of movement), and akinesia (loss of movement). The parkinsonian syndromes are the most common causes of such paucity of movement.
Restless legs syndrome (RLS) is part of the former group, and this group is commonly referred to as hyperkinesias (excessive movements), dyskinesias (unnatural movements), and abnormal involuntary movements. Box 4-1 lists the various movement disorders.