No, Raynaud's is not a heart disease. Raynaud's is a condition that causes certain areas of the body—most often the fingers and toes—to become pale, cold, and numb in response to cold temperatures or stress. It is also known as Raynaud's phenomenon or Raynaud's syndrome.
Raynaud's is caused by spasms of the small arteries that supply blood to the skin. The spasms can be triggered by cold temperatures, stressful situations, or emotional upset. When the arteries spasm, they reduce the flow of blood to the affected area, causing it to turn white, blue, or even purple. The affected area may also become numb and tingly.
The cause of Raynaud's is not known. However, it is more common in people who live in cold climates, those with certain autoimmune conditions, and those whose work or hobbies involve exposure to cold or vibration. It is also more common in women and in people who smoke or take certain medications.
Although Raynaud's is not a heart disease, it can be a symptom of a more serious underlying condition, such as lupus, scleroderma, or rheumatoid arthritis. If you experience symptoms of Raynaud's, you should consult your doctor to determine the cause.