sharon sanders
Editor-in-Chief & President
Raynaud's is a rare disorder that affects the arteries. Arteries are blood vessels that carry blood from your heart to different parts of your body.
Raynaud's is sometimes called a disease, syndrome, or phenomenon. The disorder is marked by brief episodes of vasospasm (narrowing of the blood vessels).
snip
In both types of Raynaud's, even mild or brief changes in temperature can cause attacks. For example, taking something out of the freezer or being exposed to temperatures below 60 degrees Fahrenheit can cause your fingers to turn blue.
http://www.nhlbi.nih.gov/health/dci/Diseases/raynaud/ray_what.html
Raynaud's is sometimes called a disease, syndrome, or phenomenon. The disorder is marked by brief episodes of vasospasm (narrowing of the blood vessels).
snip
In both types of Raynaud's, even mild or brief changes in temperature can cause attacks. For example, taking something out of the freezer or being exposed to temperatures below 60 degrees Fahrenheit can cause your fingers to turn blue.
http://www.nhlbi.nih.gov/health/dci/Diseases/raynaud/ray_what.html