Harbinger of Lyme Carditis: From Atrioventricular Block To Atrial Fibrillation

Introduction: Lyme disease is a tick-borne illness that is most commonly caused by Borrelia burgdorferi and transmitted by the Ixodes tick. Common manifestations are fevers, headache, arthralgia, erythema migrans, and, if left untreated, can progress to neuropathy and carditis. Lyme carditis most commonly presents with high degree atrioventricular block, however, may present with other arrhythmias.