erythema migrans

noun

erythema mi·grans | \ -ˈmī-grənz

variants: or erythema chronicum migrans \-ˌkrä-nə-kəm-

Definition of erythema migrans

: a red spreading annular skin lesion that is an early symptom of Lyme disease and that develops at the site of the bite of a tick (such as the deer tick) infected with the causative spirochete

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Early in the infection people may experience fever, headache, fatigue, swollen glands or a skin rash called erythema migrans, or a bull’s eye. — Andrea K. Mcdaniels, baltimoresun.com, "Ask the expert: With Lyme disease on the rise, here's how you can protect yourself," 3 July 2018 The most notable early symptom is a (non-itchy) rash that resembles a bull's-eye (erythema migrans) and can expand to as large as 12 inches in diameter over the course of several days. — Emma Sarran Webster, Allure, "What You Should Know About the Rise of Insect-Spread Diseases," 3 May 2018

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'erythema migrans.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

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The first known use of erythema migrans was in 1979

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erythema migrans

noun

Medical Definition of erythema migrans

: a spreading annular erythematous skin lesion that is an early symptom of Lyme disease and that develops at the site of the bite of a tick (as the deer tick) infected with the causative spirochete

— called also erythema chronicum migrans