Scottsdale 2015 Case 5: Lyme disease or not?

    A 48 y. o. F
    Annular erythematous plaques
    Upper and lower back
    Clinical ddx: drug rash vs Lyme disease
    ↑↑ IgG and IgM Lyme titers
    + Lyme Western blot

     

    Responded to doxycyclin treatment

    Conference: