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Suffering from Raynaud's type reactions. Black bruise on hand suddenly. Red when washed with warm water. Suggestions?

Today I spent a long time in a cold unheated room and my hands got very cold. I often suffer from Raynaud s type reactions on my fingers with them going white and number and needing to be held under warm water to come back to life again. Today, I was experiencing some of this but not to such an extreme degree as I have on previous occasions. Then suddenly a patch on the back of my left hand turned extremely numb and began to develop a blue/black bruise in a matter of seconds before my eyes. I tried running warm water on the hand and eventually the bruised area began to regain feeling and turn red. This happened 8 hours ago and I still have bright red patch on my hand which now feels tender and slightly odd . I am concerned as this has never happened before and the sudden and unexplained nature of the bruising and numbness alarmed me. Can you help please?
Asked On : Sun, 24 Mar 2013
Answers:  1 Views:  171
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Diseases and Conditions
Dermatologist 's  Response
Dec 2013

Welcome and thanks for posting your query to Healthcare Magic.

As per your problem you are Suffering from Raynaud's type reactions since long time and today you felt black bruise on hand suddenly.

As per the query posted by you I can get that you very well know about Raynaud's reactions. It is quite common tin some persons that after exposure to cold there is progressive redness and then bluish discoloration of the skin.

This process is due to cold injury to the blood vessels which are contracted because of chilling effect of cold. This is also to conserve the heat inside. Now in your case today you felt the blackening of skin means this time the cold injury was too high and your skin was not able to mange the constriction of vessels. SO the blood vessels got very much contracted and lead to blackish discoloration.
Because of the wise thing of putting warm water on the area, it again regained its blood supply.
Now generally it can be due to the intensity of the cold but if you feel it even with simple cold water or recurrent episodes of blackening in future then it is better to consult a dermatologist for best further guidance.

Hope these informations will help.

"With good health wishes"

Dr Sanjay Kumar Kanodia
MD (Dermatology & STDs)
Answered: Mon, 1 Jul 2013
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