Complex sentence: Tardive dyskinesia is characterized by repetitive, involuntary, purposeless movements, such as grimacing, tongue protrusion, lip smacking, puckering and pursing of the lips, and rapid eye blinking.
Split into simpler sentences: Tardive dyskinesia is characterized by repetitive, involuntary, purposeless movements. Some examples of these types of involuntary movements include grimacing, tongue protrusion, lip smacking, puckering and pursing of the lips, and rapid eye blinking.