Wearable ultrasound technology integrates traditional ultrasound imaging with the flexibility of wearable devices, enabling continuous, non-invasive monitoring of physiological parameters. These devices use high-frequency sound waves and reflected echoes to generate real-time internal images. The review explores various ultrasound transducer materials highlighting their respective benefits and limitations for wearable use. A major focus is on the development of flexible, durable materials for active components and electrodes, ensuring user comfortand device longevity. Clinical applications include cardiovascular and musculoskeletal monitoring, prenatal care, sleep apnea tracking, and therapeutic interventions like drug delivery and wound healing. While offering significant potential for real-time, accessible diagnostics outside clinical settings, challenges such as optimizing image quality, energy efficiency, and material resilience persist. The review underscores the importance of continued research in material science, electrode design, and signal processing, noting that regulatory approval and clinical validation will be crucial for widespread adoption in personalized medicine.