​Raynaud’s Phenomenon​

Raynaud's disease (also known as Raynaud's phenomenon or Raynaud's condition) is a rare disorder of the blood vessels. An abnormality in blood vessels causes spasm in the vessels that supply blood to the limbs. The blood vessels become narrow and fingers and toes don't receive enough oxygen supply; as a result, experience numbness and cold feeling in fingers and toes. The affected area may also turn become white or blue. After normal function is restored, the skin turns red and begins to tingle.

Raynaud's disease is usually triggered by cold temperatures or stress. Sometimes it happens without any underlying reason, known as primary Raynaud's. In other cases it is caused by injuries, diseases or use of certain medications, which is known as secondary Raynaud's. People living in colder climates are more likely to develop this disease. Women are up to five times more likely to develop Raynaud's than men, particularly those over the age of thirty. Sometimes family history may be a contributing factor.

Raynaud's is not a serious risk to the health but it becomes difficult to function when fingers and toes become numb. Other than your fingers and toes, Raynaud's disease can also affect other body parts such as ears, nose, nipples and lips. ​​

When to seek expert advise

Symptoms of Raynaud's disease usually resolve on their own, especially if there are no underlying causes. Our doctors at the Section of Internal Medicine at The Aga Khan University Hospital can help you manage the symptoms if you have any. In most cases, it is not dangerous but if discoloration continues then immediate medical evaluation is needed. If you smoke, have a history of diabetes, or a family history of Raynaud's disease, certain complications may occur such as risk of gangrene.