Psychiatry

Answer 6 Tardive tic disorder. The patient’s presentation is consistent with tardive tic disorder (also known as tardive Tourette’s disorder), which is a tic disorder induced by chronic use of antipsychotic medications that is phenomenologically indistinguishable from Tourette’s disorder.3 Worsening of this patient’s tics with an increased dose of an antipsychotic points toward a tardive etiology rather than an idiopathic tic disorder such as Tourette’s disorder. Hyperkinetic movement disorder is a general term for any involuntary movement syndrome.3 Choreiform movements, such as Sydenham’s chorea, are random, irregular, and nonstereotyped movements.1,3 REFERENCE 1. American Psychiatric Association. Diagnostic and statistical manual of mental disorders, 4th ed., text revision. Washington (DC): The Association; 2000. 3. Cummings JL, Mega MS. Neuropsychiatry and behavioral neuroscience. New York: Oxford University Press; 2003. Click here to return to the questions

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