Chilblains, also called perniosis or blain, when occurring on the feet, is a medical condition that is often confused with
frostbiteand trench foot. Chilblains are acral ulcersthat occur when a predisposed individual is exposed to cold and humidity. Acral refers to the extremities (e.g. fingers and toes). Chilblains are often idiopathic in origin but can be manifestations of serious medical conditions that need to be investigated. Chilblains can be prevented by keeping the feet and hands warm in cold weather. Smoking cessationand consultation with a dermatologist is advised.
* Ulceration of the digits and toes
* red nose
* Skin redness
With treatment, chilblains usually heal within 4 weeks
* Keep area warm
* Avoid scratching
* Anti-itch creams, such as
Nifedipinemay be used in more severe or recurrent cases. [cite journal |author=Rustin M, Newton J, Smith N, Dowd P |title=The treatment of chilblains with nifedipine: the results of a pilot study, a double-blind placebo-controlled randomized study and a long-term open trial |journal=Br J Dermatol |volume=120 |issue=2 |pages=267–75 |year=1989 |pmid=2647123] Its vasodilationhelps reduce pain, facilitate healing and prevent recurrences. [cite journal |author=Simon T, Soep J, Hollister J |title=Pernio in pediatrics |journal=Pediatrics |volume=116 |issue=3 |pages=e472–5 |year=2005 |pmid=16140694 | url=http://pediatrics.aappublications.org/cgi/content/full/116/3/e472 |doi=10.1542/peds.2004-2681]
Diltiazem, a newer calcium channel blocker, may also be used. [cite journal |author=Patra AK, Das AL, Ramadasan P.|title=Diltiazem vs. nifedipine in chilblains: A clinical trial |journal= Indian J Dermatol Venereol Leprol |volume=69 | pages=209–11 |year=2003 | pmid=: 17642888 | url=http://www.ijdvl.com/text.asp?2003/69/3/209/999]
* Avoid rapid changes in temperature.
* Use warm footwear.
* Keep hands and feet warm.
* Healthy diet
* High doses of
vitamin KKeep feet warm & dry! also take painkillers, and avoid alcohol before going out in snow
* [http://www.foot-care.org/chilblains.php Chilblains- a localized form of vasculitis]
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