Lyme borreliosis is a tick-borne
disease. Cardiac manifestations of the
disease are extremely rare. We report a case of
Lyme carditis in an otherwise healthy male, who presented to the Accident & Emergency Department with chest pain, dizziness and generally symptoms indicating ischaemic heart
disease. This patient, without documented history of
Lyme disease, acutely developed third-degree atrioventricular block, which required placement of a transvenous pacemaker and resolved when the patient was administered doxycycline.