Journal
JOURNAL OF THE AMERICAN ACADEMY OF DERMATOLOGY
Volume 60, Issue 1, Pages 1-20Publisher
MOSBY-ELSEVIER
DOI: 10.1016/j.jaad.2008.09.038
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The blue (or purple) toe syndrome consists of the development of blue or violaceous discoloration of one or more toes in the absence Of Obvious trauma, serious cold-induced injury, or disorders producing generalized cyanosis. The major general categories are: (1) decreased arterial flow, (2) impaired venous outflow, and (3) abnormal circulating blood. Depending on its pathogenesis, the discoloration may be blanching or nonblanching. An accurate diagnosis is critical, because many of the causes threaten life and limb, but the patient's medical history, accompanying nondermatologic findings on physical examination, and a discriminating use of laboratory tests are usually more important than the nature of the Cutaneous abnormalities in determining the cause. (J Am Acad Dermatol 2009;60:1-20.)
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