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Erythema Migrans

Erythema migrans. The patient noticed the erythema migrans lesion (9 x 14 cm) in his left thigh 3 days before the picture was taken. The patient did not remember a tick bite. Note the pale central area around the bite. Borreliosis (B. afzelii) was verified (for research purposes) by culture from a biopsy taken from the lesion.

Picture: Åland Borrelia Group

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