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Walk the Even Hospital Database by book and chapter — the raw source passages that ground Ask, DDx, and the rest.

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contentuptodate· Content· item f0_36_583

©2013 UpToDate ® Print Email Acute Raynaud phenomenon The symptoms of Raynaud disease flare up when the blood vessels "constrict," meaning they get very narrow. When that happens, the fingers or toes do not get enough blood, and they can turn blue or white. Reproduced from: the National Heart Lung and Blood Institute. What is Raynaud's? Additional information available at: file://www.nhlbi.nih.gov/health/dci/Diseases/raynaud/ray_what.html .