A client receiving long-term treatment with a conventional antipsychotic medication develops rhythmic, involuntary movements of the tongue, jaw, and facial muscles, along with grimacing. The nurse identifies these symptoms as indicative of which adverse effect?
✓ Correct Answer: Option C
Tardive dyskinesia is a serious, often irreversible extrapyramidal side effect of long-term antipsychotic use, characterized by involuntary movements, particularly of the face, mouth, tongue, and limbs.