Superficial Frostbite (Frostnip): Symptoms, Home Treatment, and Prevention

Frostnip is the mildest form of cold injury, affecting only the skin surface. It occurs with brief exposure to freezing temperatures.

Symptoms

• Skin appears pale, white, or waxy
• Cold, numb sensation
• Tingling, stinging, or "pins and needles"
• Minor swelling possible
• No permanent tissue damage

Home Treatment

1. Move to warm environment immediately
2. Gently rewarm affected area: immerse in warm (not hot) water 37–39°C (98–102°F) for 15–30 min, or use body heat (e.g., hands in armpits)
3. Do not rub, massage, or use direct heat (stove, heating pad, fire) – causes further damage
4. Protect from refreezing
5. Loose, dry clothing

When to Seek Medical Care

• Symptoms persist >30 min after rewarming
• Blisters develop (sign of deeper frostbite)
• Skin turns blue-gray, hard, or insensate
• Large area affected

Prevention

• Cover exposed skin: hat, gloves, scarf, face mask
• Layer clothing; moisture-wicking base
• Petroleum-based barrier on face (e.g., Aquaphor) in extreme cold
• Stay dry; wet clothing increases heat loss 25-fold
• Limit exposure time in severe cold/wind