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By Larry Kramer. Ice packs are used sometimes to treat muscle strains or sprains in different parts of the body. These packs if incorrectly used, can cause skin burns which may vary from mild such as first degree burns or more severe such as second and third degree burns.
Your body does overreact as an immobilization response. Ice tones down the inflammatory response which prevents unnecessary excess swelling. The answer that ice increases circulation is correct but it also means you have left it on too long. That's why they never recommend leaving it on for too long as the body initiates the hunter reaction to try to prevent frostbite. So ice doesn't actually heal injury but rather prevents extra damage.