Frostbite

A healthcare provider will diagnose frostbite after a physical exam and possible imaging tests. During your exam, your provider will look for skin discoloration or other skin symptoms like mottling or blisters. Your provider will also ask you questions about your cold exposure. For example, how long were you exposed to freezing temperatures and what was the temperature during exposure?

Depending on the severity of your symptoms, your provider may take an imaging test like an X-ray to look beneath your skin for tissue damage.

What’s a sign of permanent skin damage from frostbite?

Your healthcare provider will let you know whether or not your skin damage is permanent. An indication that you have temporary skin damage is the presence of clear blisters. If you have blood-filled blisters, you may have permanent damage. If your skin turns black or darker than your natural skin tone, that’s a sign of severe tissue damage. In that case, you may need surgery to remove your damaged skin to prevent secondary infections or gangrene.