Which of the following adverse effect can occur even after the offending drug has been withdrawn a long time back?: (A) Paradoxical tachycardia, (B) Tardive dyskinesia, (C) Malignant hypehermia, (D) Gynaecomastia
Answer is B. Tardive dyskinesia Very late appearing extrapyramidal symptom. Can occur even after the stoppage of antipsychotic drug. -Anticholinergic drugs are contra-indicated in Tardive dyskinesia.