Which physical findings are characteristic of a postrewarming frostbite injury?

Updated: Jul 29, 2019
  • Author: Bobak Zonnoor , MD; Chief Editor: Dirk M Elston, MD  more...
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Answer

Rewarming edema appears within 3 hours and lasts 1 week. Large clear blebs appear within 6-24 hours with superficial injuries. Small hemorrhagic blebs appear after 24 hours with deep injuries.

Eschar forms in 9-15 days and is described as a shrunken black carapace shell covering the wound. If the frostbite is superficial, new skin appears beneath the carapace. With deep injury, the area self-amputates. Mummification results in an apparent line of demarcation in 3-6 weeks.


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