Dr. Khandelwal emphasizes a critical warning about re-exposure: "If someone shows signs of frostbite and you bring them ...

The cold spell is part of a larger Arctic blast, a so-called polar vortex ... non-perishable food, medication and first aid supplies for humans and pets in case of power outages.

From electronics to medications, here's a list of things you shouldn't leave in your car as freezing temperatures blast most ...