Raynaud's phenomenon: Raynaud syndrome

Raynaud syndrome, also known as Raynaud's phenomenon , is a medical condition in which the spasm of small arteries causes episodes of reduced blood flow to end arterioles. [1] Typically the fingers, and, less commonly, the toes, are involved. [1] Rarely, the nose, ears, nipples, or lips are affected. [1] The episodes classically result in the affected part turning white and then blue. [2] Often, numbness or pain occurs. [2] As blood flow returns, the area turns red and burns. [2] The episodes ... Raynaud phenomenon , is vasospasm of parts of the hand in response to cold or emotional stress, causing reversible discomfort and color changes (pallor, cyanosis, erythema, or a combination) in one or more digits. Occasionally, other acral parts (eg, nose, tongue) are affected. The condition may be primary or secondary. Diagnosis is clinical; testing focuses on distinguishing primary from secondary disease. Treatment of uncomplicated cases includes avoidance of cold, biofeedback, smoking ... Raynaud’s phenomenon causes the blood vessels in the fingers and toes to narrow, restricting blood flow. Learn about the symptoms, types, and risk factors. Raynaud ' s disease is a condition that affects blood flow to the skin, causing numbness and color changes in response to cold or stress. Learn about the types, symptoms, causes and treatments of Raynaud ' s disease from Mayo Clinic experts.