Which statement is true regarding the adverse effects associated with antipsychotic medications?
a. Tardive dyskinesia is a common, reversible condition.
b. Painful dystonic reactions can occur in the first 72 hours of initiation of therapy.
c. Neuroleptic malignant syndrome (NMS) is a common adverse effect.
d. Pseudoparkinsonian symptoms can cause Parkinson's disease.
ANS: B
Approximately 90% of all dystonic reactions occur in the first 72 hours of antipsychotic therapy. These symptoms are often frightening and painful. Tardive dyskinesia is present in 20% to 25% of patients and may become irreversible. NMS is not a common adverse effect. Pseudoparkinsonism is not related to Parkinson's disease.
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