Non-Invasive Evaluation of Raynaud's Phenomenon,
ARMY RESEARCH INST OF ENVIRONMENTAL MEDICINE NATICK MA
Pagination or Media Count:
The clinical syndrome we now call Raynauds was initially described by Maurice Raynaud in the 19th century. Raynauds disease or phenomenon is characterized by intermittent vasospastic attacks on the peripheral vasculature, accompanied by changes in color of the affected digits white pallor, cyanotic blue, and deep red precipitated by cold or emotional upset. Vasospastic episodes are usually bilateral, involving the fingers or toes, and occasionally the ears and nose. These attacks may either be primary idiopathic, and referred to as Raynauds disease, or secondary to connective tissue or occlusive vascular disease, and referred to as Raynauds phenomenon or syndrom. Raynauds disease affects young women more than men, and emotional instability is thought by some to be present in a large number of cases, although there is conflicting evidence. Although the etiology of Raynauds Disease is unknown, several theories exist including increased sympathetic tone, increased blood viscosity, metabolic disturbance, or local fault of the arteries.
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