One symptom of Lyme disease is a red rash (called erythema migrans) that looks like a bull's-eye. About half the people infected with Lyme disease develop the rash within 1 to 4 weeks. It occurs at the site of the tick bite and usually gets bigger over time.
| By | Healthwise Staff |
| Primary Medical Reviewer | E. Gregory Thompson, MD - Internal Medicine |
| Specialist Medical Reviewer | Christine Hahn, MD - Epidemiology |
| Last Revised | August 31, 2010 |
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