Frostbite Stages: Early vs. Advanced Symptoms and Treatment

Early Frostbite (Frostnip → Superficial)

• Skin pale, cold, numb, waxy.
• Tingling, aching on rewarming.
• No permanent tissue loss if treated promptly.

Advanced Frostbite (Deep)

• Skin white/grayish-blue/black.
• Hard, woody texture (frozen solid).
• Blisters (clear → hemorrhagic).
• Complete numbness (nerve damage).
• High risk of autoamputation, infection, gangrene.

Immediate Field Care

1. Get to warmth; remove wet/constricting items.
2. Do not rub (ice crystals damage tissue).
3. Do not rewarm if refreezing likely – freeze-thaw cycles worsen injury.
4. Rapid rewarm in 37–39°C (98–102°F) water bath 15–30 min.
5. Pain control (often severe).
6. Elevate, protect blisters.
7. Urgent medical evacuation.

Hospital Management

• Thrombolytics (tPA) within 24h for deep frostbite (improves digit salvage).
• Iloprost (vasodilator).
• Debridement, antibiotics, tetanus.
• Surgery delayed 4–6 weeks (demarcation).