raynaud disease

Raynaud's disease is a condition that causes some areas of your body — such as your fingers, toes, tip of your nose and your ears — to feel numb and cool in response to cold temperatures or stress. It's a disorder of the blood vessels that supply blood to your skin. During a Raynaud's attack, these arteries narrow, limiting blood circulation to affected areas.

You can have Raynaud's without any underlying disease associated with it, in which case it's called Raynaud's disease or primary Raynaud's. Or it can be part of another disease, in which case doctors may refer to it as Raynaud's phenomenon or secondary Raynaud's.
Raynaud's disease affects a small percentage of Americans. Women are more likely than men are to have the disorder. It's more common in people who live in colder climates.
Treatment of Raynaud's disease depends on its severity and the presence or absence of associated conditions. For most people, Raynaud's disease is more a nuisance than a disability.