Final answer:
A nurse should reassure the parent that individual responses to methylphenidate can vary and suggest a follow-up appointment to discuss dosage adjustments or alternative treatments, while also mentioning the role of behavioral therapies in ADHD treatment.
Step-by-step explanation:
When a parent reports that methylphenidate is not working for their child, the nurse should respond in a supportive and informative manner, ensuring the parent that these concerns are important and can be addressed. The nurse can explain that response to medication, like methylphenidate, can vary between individuals, and that finding the right dosage or even the right medication can require some trial and error. Additionally, the nurse might suggest scheduling a follow-up appointment with the healthcare provider to discuss the child's symptoms, potential medication adjustments, and any other concerns. Behavioral therapies in conjunction with methylphenidate, can also be discussed given that treatment for ADHD usually involves a multi-faceted approach.