UKMLA PLAB AMC USMLE Prometric MCQ

Question Number 0549

Question:
A 34 year old returns to the UK following a camping holiday in America. He complains of fatigue and pain in his right knee. An examination reveals a central lesion on the skin around the knee with a clear zone, and flat peripheral erythema. An ECG demonstrated a 3rd degree AV block. The most likely diagnosis is

a) Staphylococcus aureus
b) gonococcal infections
c) Borrelia burgdorferi
d) Gout
e) Pseudogout