Why do some people have fingers that turn white in cold temperatures?

Answer 1

I have this, was checked, and diagnosed with bad circulation. A severe form of this is Raynaud's syndrome, which must be monitored. If you have this, you should be checked. Wear gloves whenever possible at this time of year. Good luck.

Answer 2

Raynaud's phenomenon is a condition in which blood flow to the surface tissue of the hands and feet is temporarily decreased, usually as an overresponse to cold temperatures. There are two kinds of Raynaud's phenomenon. Primary Raynaud's, also known as Raynaud's disease, occurs by itself and is the most common form. Secondary Raynaud's, also called Raynaud's syndrome, occurs as part of another disease and usually begins after age 35.

For most people, an attack is usually triggered by exposure to cold or emotional stress. In general, attacks affect the fingers or toes but may affect the nose, lips, or ear lobes.


Reduced Blood Supply to the Extremities: When a person is exposed to cold, the body's normal response is to slow the loss of heat and preserve its core temperature. To maintain this temperature, the blood vessels that control blood flow to the skin surface move blood from arteries near the surface to veins deeper in the body. For people who have Raynaud's phenomenon, this normal body response is intensified by the sudden spasmodic contractions of the small blood vessels (arterioles) that supply blood to the fingers and toes. The arteries of the fingers and toes may also collapse. As a result, the blood supply to the extremities is greatly decreased, causing a reaction that includes skin discoloration and other changes.

Changes in Skin Color and Sensation: Once the attack begins, a person may experience three phases of skin color changes (white, blue, and red) in the fingers or toes. The order of the changes of color is not the same for all people, and not everyone has all three colors. Pallor (whiteness) may occur in response to spasm of the arterioles and the resulting collapse of the digital arteries. Cyanosis (blueness) may appear because the fingers or toes are not getting enough oxygen-rich blood. The fingers or toes may also feel cold and numb. Finally, as the arterioles dilate (relax) and blood returns to the digits, rubor (redness) may occur. As the attack ends, throbbing and tingling may occur in the fingers and toes. An attack can last from less than a minute to several hours

Answer 3

In a nutshell, the cold restricts blood flow. Hope this helps! :)

Answer 4

cold blooded

Answer 5

genetics

Answer 6

less circulation