Cold compress analgesic patches work by physically lowering the temperature of the skin surface and subcutaneous tissue, reducing the sensitivity of local sensory nerve endings and thus blocking the transmission of pain signals, achieving rapid pain relief.
This mechanism is particularly effective for severe pain caused by acute sprains and contusions, and can also relieve muscle soreness caused by overexertion. When used, the cold compress constricts blood vessels, reducing the release of inflammatory mediators and alleviating pain at its source. It is one of the preferred physical therapy methods in the early stages of sports injuries, helping patients achieve comfort without the use of medication.