Mrs. Pillsbury is a 50-year-old female patient, presents to…
Mrs. Pillsbury is a 50-year-old female patient, presents to the primary care clinic with complaints of joint and muscles pain for 2 weeks. She also reported a fever of 100-101 for 2 days with a headache and fatigue. Enzyme immunoassay (EIA) lab is positive. Western blot came back positive for IgM and IgG antibodies against Borella bacteria. Upon exam, the FNP notes a rash over the left arm. Which of the following is the most likely differential diagnosis?