MADISON, Wis. ̵
Officials with the hospital said they have treated seven cases of frostbite since midnight Wednesday.
The hospital also treated one person with an injury caused by attempting to freeze boiling water.
Wisconsin is under a Wind Chill Warning from Wednesday through noon Thursday, which increases the likelihood you'll get frostbite.
Frostbitten skin becomes red and swollen. It feels like it's on fire, and you might develop blisters. It happens when your body's survival mechanism kicks in during extremely cold weather, cutting circulation to your extremities, like your feet, hands and nose.
If you are experiencing any of those symptoms, or if your skin turns blue or gray, or crystals are hard and even numb under the surface, go to the hospital.
Ice crystals are forming on your skin.
19659012] Second degree: Skin starts to feel warm even though it is not yet defrosted.
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