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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.
If you've ever iced a twisted ankle or sore shoulders, you've treated yourself to a form of cryotherapy that works. Applying cold to an injury for 15 minutes at a time, three to four times a day is highly effective, Schriner says. But the benefits of doing that to your whole body are less conclusive.