Lyme Disease, Erythema Chronicum Migrans
Erythema chronicum migrans is the initial lesion of Lyme disease, and often appears at the site of the infecting tick bite. It is a red, enlarging rash, flat (macular) or slightly raised, and may reach from 4 to 20 inches across (the average rash is 6 inches). (Courtesy of the Centers for Disease Control.)
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Review Date : 1/1/1997
Reviewed By : Mosby Publishing Company
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