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Raynaud's phenomenon

(Science: clinical sign, dermatology) (Maurice Raynaud, french physician, 1834-1881) intermittent bilateral attacks of ischaemia of the fingers or toes and sometimes of the ears or nose, marked by severe pallor and often accompanied by paraesthesia and pain, it is brought on characteristically by cold or emotional stimuli and relieved by heat and is due to an underlying disease or anatomical abnormality. When the condition is idiopathic or primary it is termed raynaud's disease.