A nurse is caring for an adolescent client who is receiving carbamazepine (Tegretol) for partial seizure disorder. Which of the following statements by the adolescent's parent is the priority for the nurse to address?

A. "He takes his medication between meals with water." Taking carbamazepine with food helps reduce gastrointestinal upset, but taking it between meals is not critical unless there are specific issues. This is not a priority unless the patient is experiencing significant GI discomfort. B. "He only sleeps about 5 hours each night." Insufficient sleep can exacerbate seizure disorders, but it is not directly life-threatening. Improving sleep hygiene is important but not the most immediate concern compared to other symptoms. C. "He seems to be getting a lot more bumps and bruises lately." Increased bruising can indicate thrombocytopenia, a potential side effect of carbamazepine, which can lead to serious bleeding issues. This is the priority as it may indicate a severe adverse effect requiring immediate medical attention and possible adjustment of medication. D. "He has not been eating as much lately." Decreased appetite can be a side effect of many medications, including carbamazepine, but it is generally not immediately dangerous unless it leads to significant weight loss or nutritional deficiencies. It’s important but not the most urgent concern.