Lyme disease

Lyme disease is the most common tickborne infectious disease in the United States. Early signs and symptoms of the condition include fever, chills, muscle pain, headache, and joint pain. As the condition progresses, affected people may experience heart problems, Bell's palsy, arthritis, abnormal muscle movement, speech problems and cognitive (thinking) abnormalities. Please visit the Center for Disease Control and Prevention's Web site for a more comprehensive list of symptoms. Lyme disease is caused by the bacterium Borrelia burgdorferi , which is transmitted to humans through the bite of infected blacklegged ticks. Certain features of the condition, including whether or not an affected person will develop medication-resistant chronic arthritis, is thought to be influenced by genetic factors (certain human leukocyte antigen genes). Treatment generally includes antibiotics to address the bacterial infection and other medications (i.e. pain medications) to relieve symptoms.