Differential consideration
Tardive dystonia
G24.09Medication-Induced Movement
Why consider it
develops after months/years of antipsychotic use; persists after cessation
Criteria and features to review
- A. Involuntary movements (tardive dystonia: sustained/repetitive muscle contractions; tardive akathisia: subjective restlessness + repetitive movements) developing in association with neuroleptic use, persisting ≥4 weeks
- B. Movements persist after neuroleptic dose reduction or discontinuation; or neuroleptic still required and symptoms are persistent
Questions to clarify
- Which documented criteria and exclusions are met for each possibility?
- What timeline, course, and functional change best distinguishes the alternatives?
- Are substance, medication, medical, developmental, and contextual explanations adequately assessed?