One symptom of Lyme disease is a red rash (called erythema migrans). The
rash usually starts as a small red area and then expands over several days. The rash occurs at the site of the tick bite and usually gets bigger over time. Sometimes the rash clears in the center, so that it looks like a bull's-eye.
About half the people infected with Lyme disease develop the rash within 4 weeks. The rash usually isn't painful or itchy. It fades within 4 weeks, even without treatment for Lyme disease.
ByHealthwise Staff Primary Medical ReviewerE. Gregory Thompson, MD - Internal Medicine Specialist Medical ReviewerChristine Hahn, MD - Epidemiology W. David Colby IV, MSc, MD, FRCPC - Infectious Disease
E. Gregory Thompson, MD - Internal Medicine & Christine Hahn, MD - Epidemiology & W. David Colby IV, MSc, MD, FRCPC - Infectious Disease
The Health Encyclopedia contains general health information. Not all treatments or services described are covered benefits for Kaiser Permanente members or offered as services by Kaiser Permanente. For a list of covered benefits, please refer to your Evidence of Coverage or Summary Plan Description. For recommended treatments, please consult with your health care provider.