The Latest on Lyme Disease

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Q: Is it true that you can have Lyme disease even if you don’t develop a bull’s-eye rash?

A. Yes. About 60 to 80 percent of Lyme cases reported to the Centers for Disease Control and Prevention have the rash, but not everyone gets it. It’s also important to know that the rash doesn’t always look like a bull’s-eye—it can appear elongated and oblong rather than round, and can sometimes even be raised like a spider bite rather than flat. The key with a Lyme rash is that it has crisp, clear margins that expand over time to at least 2 inches in diameter.

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