|Tardive dyskinesia (TD) is a disorder of the central nervous system characterized by involuntary, repetitive muscle contractions. This disorder can affect any part of the body such as the limbs, neck, trunk, eyelids, facial muscles and vocal cords.
Research shows that approximately a third of all people who use antipsychotic drugs for several years are affected by tardive dyskinesia. Older people and people with mood disorders are more at risk. People who develop Parkinsonís disease are particularly at risk as drugs used to treat this condition are associated with tardive dyskinesia.