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#942595 - 10/12/09 01:53 AM
Re: What can cause numbness in fingers and they turn blue??
[Re: TAZLOVER]
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Pooh-Bah
Registered: 07/04/07
Posts: 1179
Loc: Great Patriot Awakening
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#942600 - 10/12/09 02:09 AM
Re: What can cause numbness in fingers and they turn blue??
[Re: murbella]
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Enthusiast
Registered: 09/13/07
Posts: 281
Loc: the depths of East Asia
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#953082 - 11/01/09 12:41 PM
Re: What can cause numbness in fingers and they turn blue??
[Re: TAZLOVER]
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GRAND Pooh-Bah
Registered: 11/15/02
Posts: 3679
Loc: USA
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I was thinking just in the arms and hands, but it seems emotional stuff can affect it also. It is a spasm. Raynaud's phenomenon (RP) is a condition resulting in a particular series of discolorations of the fingers and/or the toes after exposure to changes in temperature (cold or hot) or emotional events. Skin discoloration occurs because an abnormal spasm of the blood vessels causes a diminished blood supply to the local tissues. Initially, the digit(s) involved turn white because of the diminished blood supply. The digit(s) then turn blue because of prolonged lack of oxygen. Finally, the blood vessels reopen, causing a local "flushing" phenomenon, which turns the digit(s) red. This three-phase color sequence (white to blue to red), most often upon exposure to cold temperature, is characteristic of RP.
Raynaud's phenomenon most frequently affects women, especially in the second, third, or fourth decades of life. People can have Raynaud's phenomenon alone or as a part of other rheumatic diseases. When it occurs alone, it is referred to as "Raynaud's disease" or primary Raynaud's phenomenon. When it accompanies other diseases, it is called secondary Raynaud's phenomenon.
What causes Raynaud's phenomenon?
The causes of primary and secondary RP are unknown. Both abnormal nerve control of the blood-vessel diameter and nerve sensitivity to cold exposure have been suspected as being contributing factors. The characteristic color changes of the digits are in part related to initial blood-vessel narrowing due to spasm of the tiny muscles in the wall of the vessels, followed by sudden opening (dilation), as described above. The small arteries of the digits can have microscopic thickness of their inner lining, which also leads to abnormal narrowing of the blood vessels. The rest can be found here: http://www.medicinenet.com/raynauds_phenomenon/article.htmYou need to read this, Raynauds can be a problem or a symptom, so it needs to be discussed with your doc, like.....THIS WEEK. 
Edited by Stacy (11/01/09 12:42 PM)
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I Do Whatever My Rice Krispies Tell Me To.
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