Raynaud's sign


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Noun1.Raynaud's sign - cyanosis of the extremitiesRaynaud's sign - cyanosis of the extremities; can occur when a spasm of the blood vessels is caused by exposure to cold or by strong emotion
cyanosis - a bluish discoloration of the skin and mucous membranes; a sign that oxygen in the blood is dangerously diminished (as in carbon monoxide poisoning)
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