This is a condition characterized by blood vessel spasms in the fingers, toes, ears or nose, usually brought on by exposure to cold. Raynaud's phenomenon can occur in people with autoimmune disorders such as rheumatoid arthritis, lupus and scleroderma.

a medical condition where blood vessels of the hand are damaged from repeated exposure to vibration over a long period of time. The skin and muscles do not get the necessary oxygen from the blood and eventually die. Symptoms include intermittent numbness and tingling in the fingers; pale, ashen and cold skin; and eventual loss of sensation and control in the hands and fingers. Raynaud's syndrome is also called "white finger."

A peripheral vascular disorder found more commmonly in females between 1-30 years of age. Presents with abnormal vasoconstriction of the extremities when exposed to cold or under emotional stress