Ultrasound diathermy is a therapeutic technique that uses high-frequency sound waves to generate heat within body tissues. This method is commonly used in physical therapy to promote healing, reduce pain, and improve circulation. The ultrasound waves penetrate the skin and create vibrations in the tissues, which can help relax muscles and enhance the healing process. During a typical session, a therapist applies a gel to the skin and uses a handheld device to deliver the ultrasound waves. The treatment is non-invasive and can be adjusted in intensity based on the patient's needs. Ultrasound diathermy is often used for conditions like muscle strains, joint pain, and soft tissue injuries.