yaws

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yaws

or

frambesia,

tropical infection of the skin caused by a spirochete (Treponema pertenue) closely related to that causing syphilissyphilis
, contagious sexually transmitted disease caused by the spirochete Treponema pallidum (described by Fritz Schaudinn and Erich Hoffmann in 1905). Syphilis was not widely recognized until an epidemic in Europe at the end of the 15th cent.
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. Yaws, however, is not a sexually transmitted diseasesexually transmitted disease
(STD) or venereal disease,
term for infections acquired mainly through sexual contact. Five diseases were traditionally known as venereal diseases: gonorrhea, syphilis, and the less common granuloma inguinale, lymphogranuloma venereum, and
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, i.e., it is not contracted by sexual contact; transmission is through ordinary contact with infected persons or their clothing and by insects. An ulcerating lesion ("mother yaw") appears at the site of contact. The second stage of the disease begins 6 to 12 weeks later, when similar ulcerating lesions appear all over the body. If the disease is not treated, the third stage develops several years later, nodular and ulcerating lesions affecting the soles of the feet ("crab yaws") and penetrating the bones with destructive changes. The first and second stages of yaws are easily treated with penicillin and other antibiotics. Yaws is rarely fatal; however, it can lead to chronic disfigurement and disability.

Yaws

 

a chronic and infectious spirochetal skin disease. It is common in almost all the tropical countries of North and South America, Africa, Asia, and Oceania, usually affecting the native rural population. The disease is caused by the spirochete Treponema pertenue. Infection usually occurs by contact through injured skin and is fostered by unsanitary living conditions. The symptoms of yaws are granulomatous swellings (resembling raspberries) and ulcerations of the skin; lesions of the bones, accompanied by severe pain, are not infrequent. Yaws is treated with arsenic and bismuth preparations and with antibiotics. Prophylaxis entails observance of the rules of hygiene and improvement of sanitary conditions.

yaws

[′yȯz]
(medicine)
An infectious tropical disease of humans caused by the spirochete Treponema pertenue; manifested by a primary cutaneous lesion followed by a granulomatous skin eruption.

yaws

an infectious nonvenereal disease of tropical climates with early symptoms resembling syphilis, characterized by red skin eruptions and, later, pain in the joints: it is caused by the spiral bacterium Treponema pertenue
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