The nurse is caring for an adolescent diagnosed with conduct disorder who is prescribed risperidone. Which statement by the client indicates additional teaching is needed?

Risperidone is an atypical antipsychotic that antagonizes dopamine and serotonin receptors, used in behavioral disorders. Adverse effects include sedation, orthostatic hypotension, thermoregulatory impairment, and extrapyramidal symptoms, requiring monitoring for neurologic and autonomic instability. Rationale: A. Slowed reaction time is a known central nervous system effect of risperidone. Sedation effects can impair alertness and coordination, increasing risk for injury. Clients should be cautioned about activities requiring mental acuity, such as driving or operating machinery. B. Limiting water intake is incorrect and indicates need for further teaching. Hydration status must be maintained because risperidone can impair temperature regulation and increase dehydration risk. Adequate fluid intake helps prevent heat-related complications and supports physiologic stability. C. Sensitivity to extreme temperatures is a recognized adverse effect. Thermoregulation impairment occurs due to central dopamine blockade, reducing the body’s ability to adapt to heat or cold. Clients should avoid prolonged exposure to extreme environmental conditions. D. Taking risperidone with food is acceptable and does not affect absorption significantly. Administration flexibility allows dosing with or without meals, which can improve adherence and reduce gastrointestinal discomfort without compromising therapeutic efficacy.