How to know if this is really frostbite?

Frostbite: Redness and swelling and pain. Get evaluated keep away from extreme temperature even heat, keep clean consider topical antibiotics and avoid repeat exposure to cold. Seek medical attention...See the picture frostbite is like a burn. And can have serious aftereffects if not treated properly. So beyond understanding that seek medical attention.

See below: If you have discoloration of the skin, numb, tingling feeling, lack of motion of the part involved. Have it checked out don't wait