Raynaud’s phenomenon is a condition in which cold temperatures or strong emotions cause blood vessel spasms that block blood flow to the fingers, toes, ears, and nose.

Raynaud's phenomenon can be associated with diseases of the arteries such as:

• Atherosclerosis
• Buerger's disease
• Rheumatoid arthritis
• Scleroderma
• Systemic lupus erythematosus

Other causes of Raynaud's phenomenon may include:

• Repeated injury, particularly from vibrations such as those caused by typing or playing the piano
• Overdose of of certain medicines, including ergot compounds and methysergide
• Smoking

Strong emotion or exposure to the cold causes the fingers, toes, ears, or nose to become white, then turn blue. When blood flow returns, the area becomes red and then later returns to normal color. The attacks may last from minutes to hours.

Specific symptoms include:

• Toes or fingers that change color when exposed to the cold
• Toes or fingers that change color upon pressure
• Pain in the fingers or toes when exposed to the cold
• Tngling or pain on warming

Additional symptoms that may be associated with this disease:

• Skin redness or inflammation
• Bluish skin
• Paleness

The doctor will perform a physical exam. Vascular ultrasound and a cold stimulation test for Raynaud's phenomenon may be done.