Lyme disease can result from the bite of a black-legged tick that is carrying ... The medical term for this distinctive rash is erythema migrans. Other people with Lyme disease may have a ...

In this double-blind trial, researchers randomized 180 patients (minimum age, 16) with annular skin lesions (erythema migrans) of ≥5 cm in diameter to 1 of 3 treatments: a single 2-g dose of ...