The nurse is providing discharge instructions to a client who has been prescribed gabapentin 300 mg by mouth (PO) three times a day for postherpetic neuralgia. Which symptom should the nurse tell the client to report to the healthcare provider?

Choice A Reason: Photosensitivity is not a common side effect of gabapentin. While some medications can cause increased sensitivity to sunlight, gabapentin is not typically associated with this issue. Therefore, it is not a primary concern that needs to be reported to the healthcare provider. Choice B Reason: Rapid weight gain is a significant side effect that should be reported to the healthcare provider. Gabapentin can cause fluid retention and swelling, which may lead to rapid weight gain. This can be a sign of more serious underlying issues, such as heart or kidney problems, and requires prompt medical attention. Choice C Reason: Gastric irritation, such as nausea or upset stomach, can occur with gabapentin use but is generally not severe. While it can be uncomfortable, it is usually manageable with supportive care and does not typically require immediate reporting to a healthcare provider unless it becomes severe or persistent. Choice D Reason: Sexual dysfunction is not commonly associated with gabapentin. While some medications can affect sexual function, gabapentin’s side effects are more commonly related to the nervous system, such as dizziness, drowsiness, and coordination issues. Therefore, this is not a primary concern that needs to be reported.