The most common symptom of Lyme disease is an erythema migrans (EM) rash, which can appear in the shape of a bullseye. This article outlines some other possible causes of a bullseye-shaped rash ...

By definition, patients with probable late Lyme disease had no history of physician documented or treated EM rash and no objective clinical signs associated with late Lyme disease. However ...

Lyme disease is the most common tick-borne illness (spread by infected ticks) in the United States. A bacterial infection ...