Wearable devices are transforming chronic disease management by enabling continuous monitoring, early detection, and personalized care. These technologies empower patients to self-manage conditions such as diabetes, cardiovascular, respiratory, and neurological disorders, while providing healthcare professionals with real-time, actionable data. Such integration enhances clinical decision-making, reduces complications, and lowers healthcare costs through decreased hospitalizations and remote care options. Despite their promise, challenges persist—ranging from high device costs and data privacy concerns to limited interoperability and uneven access. Future progress depends on embedding wearables into digital health ecosystems, leveraging artificial intelligence for predictive analytics, and supporting precision medicine. Ensuring equitable access, promoting patient literacy, and advancing supportive policies will be essential to fully realizing the potential of wearables in reshaping chronic care delivery.