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Palmar erythema : ウィキペディア英語版 | Palmar erythema
Palmar erythema is reddening of the palms at the thenar and hypothenar eminences.〔James, William; Berger, Timothy; Elston, Dirk (2005). ''Andrews' Diseases of the Skin: Clinical Dermatology''. (10th ed.). Saunders. ISBN 0-7216-2921-0.〕 ==Causes== It is associated with various physiological as well as pathological changes, or may be a normal finding: *Portal hypertension *Chronic liver disease (including chronic hepatitis〔Basic pathology 8th edition p 646〕) *Pregnancy *Polycythemia *Thyrotoxicosis *Rheumatoid Arthritis (especially in patients with polycythaemia) *Eczema and Psoriasis * Deep telangiectasias * Coxsackievirus A infection (Hand, foot and mouth disease)〔 * Rocky Mountain Spotted Fever * Secondary Syphilis〔 * Kawasaki disease Because circulating levels of estrogen increase in both cirrhosis and pregnancy, estrogen was thought to be the cause for the increased vascularity. More recently, nitric oxide has been implicated in the pathogenesis of palmar erythema.
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