The formation of pathological scars is a common medical and aesthetic problem worldwide. Surgical interventions, burns and injuries are the most common cause. Treating these scars is a challenge for any surgeon. The Clinic of Plastic-Reconstructive and Aesthetic Surgery with Thermal Trauma and Imaging Diagnostics applied an innovative method of thermotherapy with high-intensity, focused ultrasound in 20 patients with hypertrophic scars and keloids of different age, etiology and parameters. After a series of procedures, we got excellent results, reducing scar size, pigmentation, pain and itching. This type of thermotherapy is successfully applied to pathological scars. In this way, a change in scar density is achieved by converting hard collagen into a gelatin-like mass.As a subsequent procedure, moderately compressive massages are applied for faster resorption of the pathological collection. Our results show that high-intensity focused ultrasound thermotherapy of pathological scars is a non-invasive method of treatment with reasonably good results as regards both aesthetic and functional aspects.