Cold compresses primarily relieve pain, reduce swelling, lower local temperature, aid in fever reduction, and soothe muscle tension.
When a body part is subjected to external impact or acute inflammation, local capillaries rupture or permeability increases, leading to tissue fluid leakage and swelling. The low temperature of a cold compress causes strong vasoconstriction, significantly reducing blood flow to the injured area, thereby inhibiting further tissue fluid leakage and effectively controlling the spread of swelling. Simultaneously, the low temperature accelerates lymphatic drainage, helping to absorb existing fluid buildup. It has a significant effect on reducing redness and swelling caused by ankle sprains, joint contusions, etc., preventing the injury from worsening due to increased swelling.