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Chilblains - it's that time of year again

Chilblain's - chronic cold weather injury

It's winter in the northern hemisphere and time again forcold weather injuries of the feet.  I'm starting to seecold weather injuries of the ftt the two most common cold weather injuries, chilblains and frostnip.  The difference between chilblains and frostnip is the presence or absence of moisture.  Chilblains occurs with chronic cold temperatures and in the presence of moisture (think damp, cold British castle).  Chilblains does not require that tissue freezes but occurs in temperatures above freezing (35-45 degrees F).  Frostnip on the other hand occurs in a dry environment where the superficial tissue actually freezes.  Freezing of the superficial skin cells results in dehydration of the cell and cell death.

The origin of the word chilblain is derived from old English.  Chil refers to a lower temperature and blain is the name of a superficial area of redness and swelling.  Frostnip differs from frostbite in that frostnip is a very superficial skin injury.

The symptoms of chilblains and frostnip are actually quite different.  Chilblains presents with slight swelling of the toes and redness.  The toes and forefoot have a dull achethat is not relieved by rest.  With frostnip the affected skin blisters and has a red, brown or wheat colored crust.  Pain is described as a burning type of pain.

So be careful out there.  No snow shoveling in your tennis shoes.  Be sure to stay warm in your little castle.

Jeff

Dr. Jeffrey Oster

Jeffrey A. Oster, DPM
Medical Director
Myfootshop.com

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