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What is erythema migrans?
Erythema migrans is an expanding skin rash associated with early Lyme disease. It may be circular or oval and does not always have the classic bullseye appearance.
Reviewed by VuxLore® Knowledge Team For Everyone
Short answer
At a glance
Key takeaways
More varied than the familiar symbol
Public images often emphasise a red ring with a pale centre, but erythema migrans can be evenly coloured, oval or otherwise different from that textbook pattern.
Clinical context matters
A clinician considers the rash, exposure history, location and other symptoms. Do not wait for a perfect bullseye before requesting advice.
Sources and further reading
UK Lyme disease guidance and data
For current UK clinical advice, public-health guidance and surveillance data, consult these primary national sources.