Hypothermia can occur when temperatures are below 50 degrees.
Signs are shaking and slow reactions.
If this occurs, go to the emergency room.
Frostbite is most often seen in the fingers, ears, nose and toes.
The skin turns grey and feels numb.
Doctors say submerse the extremity in water up to one hundred and four degrees, do not rub it.
If the numbing continues see a doctor.
And, If you have an existing medical condition, you will want to be especially careful.
"People with respiratory problems like asthma, COPD, they should be aware that cold air can affect them more severely than other people. They may get an exacerbation of their disease because of the cold weather. People with cardiac conditions; they should be aware of the fact that shoveling snow may make that worse along with the cold air. Always make sure you are healthy enough to do these activities outside when it's very cold," said ER Dr. Nathan Fredrick.
Dr. Fredrick said children are especially susceptible so you should make sure to dress them in layers.