Final answer:
The nurse should document the adverse effect of Tardive dyskinesia for this patient.
Step-by-step explanation:
The adverse effect that the nurse should document for this patient is Tardive dyskinesia. Tardive dyskinesia is a side effect of antipsychotic medications like haloperidol, and it is characterized by involuntary, purposeless movements of the face, jaw, and tongue. These movements can include worm-like movements of the tongue and trouble speaking and chewing. Tardive dyskinesia is caused by long-term use of antipsychotics and can be irreversible.