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erythema chronicum migrans

 

Definition: a raised erythematous ring with advancing indurated borders and central clearing, radiating from the site of a tick bite and persisting for 2–16 weeks; the characteristic skin lesion of Lyme disease, due to the spirochete Borrelia burgdorferi, which may be identified by PCR in biopsies.

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© Copyright 2017 Wolters Kluwer. All Rights Reserved. Review Date: Sep 19, 2016.
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