Evidence‑Based Management Options for Antipsychotic‑Induced Parkinsonism

Assessment of Severity

• Evaluating the degree of functional impairment caused by parkinsonian signs (bradykinesia, rigidity, tremor) guides the urgency of therapeutic intervention. [1][2]3

First‑Line Intervention Strategies

Dose Reduction

• Reducing the antipsychotic to the lowest dose that still controls psychotic symptoms is an evidence‑based option for managing drug‑induced parkinsonism. [1][2]3
• This approach is especially preferred when psychotic symptoms are already well‑controlled and further dose lowering is unlikely to jeopardize psychiatric stability. 4

Switching Antipsychotics

• Gradual cross‑titration to an antipsychotic with a lower extrapyramidal‑symptom liability helps minimize withdrawal effects while preserving psychiatric stability. 4

Medication Selection

Anticholinergic Agents (younger patients)

• Benztropine or trihexyphenidyl are standard anticholinergic medications used to counteract the dopamine‑acetylcholine imbalance in the striatum that underlies antipsychotic‑induced parkinsonism. 4

All statements are supported by the cited references.