Conditions most commonly associated with Raynaud's phenomenon include lupus, Buerger's disease, Sjögren's syndrome and scleroderma, according to Johns Hopkins Medicine. Other related conditions include rheumatoid arthritis, thyroid disorders, atherosclerosis and pulmonary hypertension.
Raynaud's phenomenon is a condition that causes blood flow to the fingers to decrease, explains Johns Hopkins Medicine. Less frequently, Raynaud's causes a decrease in blood flow to other parts of the body, including the ears, knees, toes and nose. Risk factors for Raynaud's phenomenon include, among other things, connective tissue or autoimmune diseases, injury or trauma, cigarette smoking and chemical exposure. While there is no cure for Raynaud's as of 2015, patients can successfully manage the condition with proper treatment.