Below is an instruction from Human. Write a response.
    ### Instruction:
    What is (are) Tardive Dyskinesia ?
    ### Response:
    Tardive dyskinesia is a neurological syndrome caused by the long-term use of neuroleptic drugs. Neuroleptic drugs are generally prescribed for psychiatric disorders, as well as for some gastrointestinal and neurological disorders. Tardive dyskinesia is characterized by repetitive, involuntary, purposeless movements.
    