Final answer:
The nurse should instruct the client to immediately report unusual bleeding or bruising, severe fatigue or weakness, and yellowing of the skin or eyes (jaundice) when receiving phenytoin to treat seizures.
Step-by-step explanation:
The nurse should instruct the client to immediately report the following side effects when receiving phenytoin to treat seizures:
- Unusual bleeding or bruising
- Severe fatigue or weakness
- Yellowing of the skin or eyes (jaundice)
These side effects may indicate a serious reaction to the medication and require immediate medical attention.