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Which of the following signals that a client treated with haloperidol may be experiencing tardive dyskinesia?

  1. Fever and sore throat

  2. Tongue thrusting and lip smacking

  3. Increased urination

  4. Decrease in blood pressure

The correct answer is: Tongue thrusting and lip smacking

Tardive dyskinesia is a side effect associated with long-term use of antipsychotic medications, such as haloperidol. It is characterized by involuntary movements of the face, tongue, and extremities. Tongue thrusting and lip smacking are classic signs of tardive dyskinesia. Choices A, C, and D do not specifically relate to the symptoms of tardive dyskinesia.