Erythema chronicum migrans

Case contributed by Mark Thurston
Diagnosis not applicable
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This 2007 photograph depicts the pathognomonic erythematous rash in the pattern of a bull’s-eye, referred to as erythema migrans. The rash manifested at the site of a tick bite, on this Maryland woman’s posterior upper arm, signifying a case of Lyme disease, caused by the bacterium Borrelia burgdorferi, and transmitted to humans, by the bite of infected blacklegged ticks.

Case Discussion

Author: CDC / James Gathany.

Original file/s: https://phil.cdc.gov/details.aspx?pid=9875

Modifications: Square crop.

License: This image is in the public domain and thus free of any copyright restrictions.

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