Frostbite can cause irreversible damage because it limits adequate oxygen from reaching your extremities. Nothing can heal without oxygen and blood flow, so one option for treating frostbite is hyperbaric oxygen therapy. Hyperbaric oxygen therapy fills your therapy chamber with 100% compressed oxygen. By saturating your blood vessels with oxygen, frostbite is healed.*

Know the three stages of frostbite and seek medical care immediately. Stage one is called frostnip, in which your skin pales; stage two is superficial frostbite, which involves red, very cold skin, and stage three is deep frostbite, which includes numbness and pain.

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*http://www.trihealth.com/dailyhealthwire/skin-health/hyperbaric-oxygen-therapy-newer-frostbite-treatment/
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