An older client's spouse reports to the nurse that there has been a behavior change in the client for the past several days. The client was recently seen by the healthcare provider at the clinic and was treated for seasonal allergies and insomnia. Which action is most important for the nurse to implement?

RationaleA. Older adults are more susceptible to medication side effects due to changes in metabolism and polypharmacy. Reviewing the client's current medications, including over-the-counter medications for allergies and insomnia, can identify potential culprits.B. Some medications used for allergies or insomnia, such as antihistamines or sedatives, can cause EPS in older adults. EPS include symptoms like tremors, rigidity, or involuntary movements. These symptoms can indicate adverse reactions that require immediate attention and adjustment of medication.C. These symptoms could be side effects of medications commonly used for allergies and insomnia. They may also indicate other underlying health issues or medication interactions. Assessing these symptoms helps in determining their severity and whether they require further evaluation or intervention.D. Social isolation can contribute to changes in behavior, especially in older adults. While social activities are beneficial for mental health, in this case, addressing the potential medication-related issues (options A and B) takes precedence to ensure the client's safety and well-being.