May. 08, 2023
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There are continuous orolingual dyskinesias, consisting mainly of chewing movements and alternating tongue protrusion and retraction. Holding the jaws open abolishes the chewing but not the tongue movements. Active protrusion of the tongue resists retraction. There are also prominent dyskinesias of the head, and subtler movements of the trunk, feet, and left hand. (Contributed by Dr. Joseph Jankovic.)