What should be applied to a closed wound to reduce swelling?

Using a cold pack on a closed wound is an effective method to help reduce swelling. The cold temperature constricts blood vessels and decreases the metabolic activity of the surrounding tissues, which helps control inflammation and swelling. This is particularly important in the initial stages following an injury when the body begins to respond with swelling and pain.

Additionally, the cold pack can provide pain relief by numbing the area, which is beneficial for the patient. It's important to apply the cold pack wrapped in a cloth or towel to avoid direct contact with the skin, preventing frostbite.

In the context of managing closed wounds, the application of a cold pack is a widely recognized first aid practice for minimizing the body's inflammatory response.