Lyme disease is a bacterial infection that is spread to humans through the bite of infected blacklegged ticks. If not treated promptly with antibiotics, the infection can spread to joints, the heart, and the nervous system.
Signs and Symptoms
The first sign of Lyme disease is usually a red, swollen rash called erythema migrans or EM rash. The rash appears at the site of a tick bite about 3 to 30 days after being bitten. It can reach up to 12 inches (30 cm ... Read more
