reglan and tardive dyskinesia

FDA notified healthcare professionals that a boxed warning had to be added to drug labels about the risk of long-term or high-dose use of metoclopramide (reglan) and the possibility of tardive dyskinesia.    There is no reversal of tardive dyskinesia and no treatment available. What is tardive dyskinesia?

[youtube=http://www.youtube.com/watch?v=W_3bbpFjI68]