Lyme Disease: A small, red bump may appear at the site of the tick bite.This small bump is normal after a tick bite and doesn't indicate lyme disease.However, over the next few days, the redness may expand forming a rash in a bull's-eye pattern, with a red outer ring surrounding a clear area.The rash, called erythema migrans, is one of the hallmarks of lyme disease.
Answered 9/28/2016
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