Frostnip is not the same as frostbite, but can precede it. Ice crystals form on the surface of the skin, rather than within the tissue as in frostbite. The blood vessels in your skin severely constrict, causing paleness or reddened areas. You may feel numbness, pain, or prickling or tingling of the area. However, the skin should respond normally to pressure without serious numbness and should retain its normal texture. Symptoms resolve with rewarming.  Frostnip may affect children more quickly than adults. Frostnip usually affects extremities such as the ears, nose, fingers, toes, and cheeks.  Frostnip signals that weather conditions are sufficient to cause frostbite with further exposure. Although it may not feel superficial, superficial frostbite is so named because the damage can be reversed with treatment. This condition is more serious than frostnip, and can be recognized by numbness, white or grayish-yellow skin with red blotches, aching or throbbing, and slightly hardened or swollen skin. There is less possibility of tissue loss with superficial frostbite. Some people with superficial frostbite may develop blisters with clear fluid within 24 hours. These are usually located at the ends or tips of the area affected and do not lead to tissue loss. Severe frostbite is the most dangerous form of frostbite. In cases of severe frostbite the skin looks pale and will feel waxy and unusually firm, and there is a loss of feeling/numbness of the affected area. In some cases, severely frostbitten tissue may have blisters on the skin that may have blood in them, or signs of gangrene (gray/black dead skin). The most severe form of frostbite extends into the muscle and bone and can lead to death of the skin and tissues. The risk of tissue loss is high with this form. If you are able to get to a hospital or emergency department within two hours, you should not try to treat frostbite yourself. If you are unable to get out of the cold, do not try rewarming the area if it is in danger of refreezing. The freeze-thaw-freeze-thaw cycle causes more damage to your tissue than allowing it to simply remain frozen. If you are more than two hours away from medical treatment, you can begin treatment yourself. All three conditions -- frostnip, superficial frostbite, and severe frostbite -- have the same basic procedure for “field treatment” (away from a hospital).
حدِّد ما إن كنت مصابًا بلسعة برد أم لا. حدِّد ما إن كنت تعرضت لقضمة صقيع سطحية أم لا. حدِّد ما إن كنت تعاني قضمة صقيع حادة. تخلص من البرد واسعَ للحصول على علاج في أقرب وقت ممكن.