View Full Version : Cold Hand: Raynaudís Phenomenon

4.5.08, 2:13 AM
Raynaud’s phenomenon is a condition in which cold temperatures or strong emotions cause vasospasm -- spasms in blood vessel that block blood flow to the fingers, toes, ears, nose, nipples and lips. Fingers are the most commonly affected area, but the toes also are affected in 40 percent of people with Raynaud's.
When this occurs without any known cause, it is called Raynaud's disease, or primary Raynaud's. When the blood blockage occurs along with a likely cause -- such as exposure to harsh cold or strong emotions -- it is known as Raynaud's phenomenon, or secondary Raynaud's. Primary Raynaud's is more common and tends to be less severe than secondary Raynaud's.
Reynaud's triggers: When you have Raynaud's, cold temperatures or stressful emotions can trigger attacks. For everybody, when your body is exposed to cold temperatures your extremities lose heat. Your body reacts to conserve heat by slowing down the blood supply to your fingers and toes. It does this by narrowing the small arteries under the skin of your extremities. In people with Raynaud's, this normal response is exaggerated and blood flow is more strongly reduced in response to cold temperatures than in people without the disorder.

More... (http://www.Coffeerooms.com/lupus/2008/04/cold_hand_rayna.html)