Which problem reported by a client taking lovastatin requires the most immediate follow-up by the nurse?

Rationale: A. Muscle pain: Muscle pain can signal myopathy or rhabdomyolysis, a serious adverse effect of statins that may lead to kidney damage due to muscle breakdown. This symptom requires immediate evaluation to prevent potentially life-threatening complications. B. Diarrhea and flatulence: These are common gastrointestinal side effects of lovastatin and are usually mild and self-limiting. They do not require urgent intervention unless severe or persistent. C. Abdominal cramps: Mild abdominal cramping can occur with statin use, often due to GI irritation. While uncomfortable, it is not usually urgent unless accompanied by other severe symptoms like jaundice or persistent nausea. D. Altered taste: Changes in taste perception may occur with some medications, including statins, but are not typically dangerous. This symptom can affect quality of life but does not indicate an immediate threat.