Raynaud’s phenomenon is a common condition that affects the blood supply to certain parts of the body, usually the fingers and toes.
It is often also referred to as Raynaud’s syndrome, Raynaud’s disease or just Raynaud's.
Why does it happen?
The condition occurs because your blood vessels go into a temporary spasm which blocks the flow of blood. This causes the affected area to change colour to white, then blue and then red as the blood flow returns.
Raynaud’s is usually triggered by cold temperatures or by anxiety or stress.
You may also experience pain, numbness and pins and needles in the affected body parts. Symptoms can last from a few minutes to several hours.
It is not a serious threat to your health but can be annoying to live with because it makes fine movements of the fingers difficult. People with Raynaud’s often go for long periods without any symptoms and sometimes the condition goes away altogether.