True or false? Lyme disease always causes a rash.

Lyme disease target lesion


False. “If you’re ‘lucky enough’ to have a target lesion from Lyme disease (about 80 percent do) or a rash from Rocky Mountain spotted fever, that helps pin down the diagnosis, but that’s not always the case.”

Tick Bite: How to Tell If It’s Made You Sick

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Photo: CDC.