Lyme disease

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Lyme disease	Lyme disease, erythema chronicum migrans	Lyme disease - Borrelia burgdorferi organism	Lyme disease organism, Borrelia burgdorferi
Tick, deer - adult female	Tick, deer engorged on the skin

Borreliosis

Deer ticks can be so small that they are almost impossible to see. Therefore, many people with Lyme disease never even saw a tick. These people are more likely to develop symptoms because the tick remained on their body longer.

The symptoms of Lyme disease include:

• A flat or slightly raised red lesion at the site of the tick bite (can be larger than 1 to 3 inches in diameter, often with a clear area in the center)
• Fever
• Headache
• Lethargy
• Muscle pains
• Stiff neck
• Joint inflammation in the knees and other large joints

Additional symptoms that may be associated with this disease:

• Itching, overall
• unusual or strange behavior

• Physical examination in advanced Lyme disease may show evidence of joint, heart, or brain abnormalities
• Antibodies to Borrelia burgdorferi by immunofluorescence (IFA) or ELISA . ELISA tests are confirmed with a Western blot test.

Review Date: 06/15/2005
Reviewed By: Monica Gandhi, MD, MPH, Assistant Professor, Division of Infectious Diseases, UCSF, San Francisco, CA. Review provided by VeriMed Healthcare Network.