A female from the Northeast is seen for general malaise and low-grade fever. She was out all weekend hiking and now feels extremely tired. On examination, erythema chronicum migrans is observed. What may the patient have acquired?
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Contributed by James Gathany, Center for Disease Control and Prevention (CDC PHIL)
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The classical early sign of Lyme disease is a circular expanding rash called erythema chronicum migrans.
The rash is red, warm, and painless.
Erythema chronicum migrans is seen in 80% of patients with Lyme disease. Other early features of Lyme disease include headache, muscle pain, fever, and malaise.
Lyme disease is caused by Borrelia burgdorferi, which is transmitted to humans through the bite of an infected deer tick.
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