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Superficial first degree frostbite - Frostnip

Very low urgency
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It is damage to deep skin and tissue due to a lack of blood supply, caused by extreme and/or prolonged cold. It is more common in the fingers, toes, nose and ears. There are environmental factors that aggravate the effect of the cold and resulting lesions. It initially presents with pallor, reduced sensitivity and swelling (chilblain). It is a priority to heat, dry and protect the area to recover circulation and prevent injuries.
Bibliographic references

1. Frostbite. Ken Zafren, MD, FAAEM, FACEP, FAWM. C Crawford Mechem, MD, FACEP. UpToDate. Apr 20, 2015.
2. Kroeger K, Janssen S, Niebel W. Frostbite in a mountaineer. Vasa 2004; 33:173.
3. Simon TD, Soep JB, Hollister JR. Pernio in pediatrics. Pediatrics 2005; 116:e472.
4. Castellani JW, Young AJ, Ducharme MB, et al. American College of Sports Medicine position stand: prevention of cold injuries during exercise. Med Sci Sports Exerc 2006; 38:2012.

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Symptoms

    Nail takes more than 2 seconds to regain color after pressing on it

    Fingers are pale and/or bluish

    Cold skin

    Finger is swollen and reddened

    Paleness

Symptoms to watch out for

Fever (temperature higher than 100.4 ºF)
Increase in pain and swelling of the affected area
White or bluish-gray skin in the area
Intense shivering
Talk incoherently, about things that don't make sense
Loss of coordination

Self-care

Take over-the-counter pain relievers or anti-inflammatories.
Remove wet or damp clothing.
Apply heat to the affected area.
Protect affected area from cold, wind and moisture.
Avoid bursting blisters that form.
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