For which type of injury should you not apply heat?

Heat should not be applied to new sprains or strains because these types of injuries involve inflammation and swelling that typically occur immediately following the incident. When heat is applied, it can lead to increased blood flow to the area, potentially exacerbating swelling and prolonging the healing process. In such cases, the best initial treatment is to use ice, which helps to reduce inflammation and numb the pain.

In contrast, chronic muscle pain, arthritis pain, and back pain often benefit from heat application, as heat can help to ease stiffness and promote relaxation in the muscles and joints. Understanding the proper treatment method for different types of injuries is crucial in delivering effective first aid and improving recovery outcomes.