2 In all cases, TD must persist for at least 1 month after a medication is discontinued for a TD diagnosis. The Diagnostic and Statistical Manual of Mental Disorders, Fifth Edition (DSM-V) classifies TD as a medication-induced movement disorder that can develop after short-term and long-term use of medications, as well as after discontinuation of, change in, or reduction in medications. 1 However, TD is also associated with a wide variety of other medications. In fact, TD occurs in 20%-50% of patients taking APDs. TD most generally occurs in individuals who are on long-term treatment with dopaminergic antagonist medications (antipsychotic drugs ). The tardive dyskinesia (TD) form of dyskinesia gets its name from the slow-or tardive-onset of involuntary movements of the face, lips, tongue, trunk, and extremities. The term dyskinesia refers to involuntary muscle movements that can range from slight tremor to uncontrollable movement of the entire body.
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