Internet of Things (IoT) technologies have the potential to revolutionize healthcare through real-time patient monitoring, remote diagnostics, and improved care coordination. As IoT device usage grows, ensuring reliable performance under realistic workloads becomes critical—particularly in healthcare, where failures can have life-threatening consequences. However, performance testing for IoT devices in this sector is uniquely challenging due to device heterogeneity, stringent regulatory requirements, limited resources, real-time data processing needs, and complex network environments. This paper explores the primary challenges of performance testing in healthcare IoT ecosystems, identifies gaps in current methodologies, and proposes potential strategies for robust and reliable testing practices.