What is "tardive dyskinesia"

n. involuntary, repetitive movements as a side effect of dopamine antagonists.

n. involuntary rolling of the tongue and twitching of the face or trunk or limbs; often occurs in patients with parkinsonism who are treated with phenothiazine

Tardive dyskinesia (TD) is a difficult-to-treat and often incurable form of dyskinesia, a disorder resulting in involuntary, repetitive body movements. In this form of dyskinesia, the involuntary movements are tardive, meaning they have a slow or belated onset. This neurological disorder, by definition, most frequently occurs as the result of long-term (usually at least 3 months duration) or high-dose use of antipsychotic drugs, or in children and infants as a side effect from usage of drugs for gastrointestinal disorders.