Raynaud’s
Phenomenon
What Is Raynaud’s Phenomenon?
Raynaud’s Phenomenon refers to episodes of color changes of the fingers and toes during exposure to cold or in response to emotional stress. In some people, the ears, lips and nose also may be affected. While it is normal for blood flow to the fingers to be reduced in extreme cold, people with Raynaud’s phenomenon are very sensitive to cold temperatures. They may develop attacks even in air-conditioned rooms or simply by holding a cold drink. An attack of Raynaud’s phenomenon usually lasts 10 to 15 minutes.
There are two forms of Raynaud’s phenomenon. When it occurs in the absence of disease, it is known as primary Raynaud’s phenomenon. Raynaud’s phenomenon also may occur with certain forms of arthritis, such as rheumatoid arthritis (RA), scleroderma and lupus. This form is called secondary Raynaud’s phenomenon.