What symptom should a client taking erythromycin report to their healthcare provider?

Clients taking erythromycin should monitor for gastrointestinal symptoms due to the medication's potential effect on the digestive system. Persistent diarrhea is particularly significant because it may indicate an imbalance in gut flora or the development of a secondary infection, such as Clostridium difficile-associated diarrhea, which is a serious condition. It is essential for clients to report this symptom to their healthcare provider, as it may require immediate medical attention or a change in medication.

In contrast, nausea, headache, and fatigue, while they can also occur with erythromycin use, are more common and less alarming side effects. These symptoms may not necessitate urgent intervention compared to the potential risks associated with persistent diarrhea. Proper monitoring and reporting of gastrointestinal discomfort can help ensure the client's safety and effectiveness of the therapy.