A therapeutic indication for thermotherapy is to increase circulation and generate macrophages to combat infection. Is this statement true or false?

• A. False
• B. Unknown
• C. True
• D. Not recommended

Answer: (C)

Thermotherapy raises tissue temperature, which causes vasodilation and increased local blood flow. That improved circulation brings more immune cells to the area, including macrophages, and enhances their activity and phagocytic function, helping to combat infection. The idea of “generating macrophages” isn’t literal—heat promotes recruitment and functional readiness of macrophages at the site. In practice, heat is usually avoided in the acute infection phase due to risks like increased inflammation or edema, but it can be beneficial in subacute or chronic infections or wound healing where better perfusion supports the immune response.