Final answer:
The nurse should redirect the conversation back to fishing.
Step-by-step explanation:
When a client diagnosed with pain disorder suddenly reverts to talking about their pain, the nurse should d. Redirect the interaction back to fishing. This is because the client's focus on pain may be exacerbating their symptoms, and redirecting the conversation back to fishing can help shift their attention away from the pain. By providing a distraction, the nurse can help the client cope with their pain more effectively.