Below is an instruction from Human. Write a response.
    ### Instruction:
    What is (are) Lyme disease ?
    ### Response:
    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.
    