• J Emerg Med · Jul 2023

    Case Reports

    SYNCOPE: A RARE PRESENTATION OF LYME DISEASE.

    • Rylee Pence and Bethany Johnston.
    • Department of Emergency Medicine, Summa Health System, Akron, Ohio.
    • J Emerg Med. 2023 Jul 1; 65 (1): e23e26e23-e26.

    BackgroundLyme disease is one of the most common vector-borne illnesses in the United States. It is caused by Borrelia burgdorferi infection transmitted via the Ixodes tick. Rarely, it can progress to early disseminated Lyme disease with cardiac or neurologic manifestations, or both.Case ReportA 41-year-old previously healthy man presented to the emergency department (ED) by ambulance after an episode of syncope. Electrocardiogram revealed right bundle branch block with borderline first-degree atrioventricular nodal block. During his admission he was noted to have night sweats and elevated procalcitonin. Infectious workup revealed positive Borrelia enzyme-linked immunosorbent assay. Further testing revealed positive Borrelia immunoglobulin M with negative immunoglobulin G, indicating a recent infection. Why should an emergency physician be aware of this? Lyme disease should be on the differential for patients presenting with vague, flu-like symptoms in the summer months in endemic areas. Treatment of early Lyme disease with doxycycline can prevent progression to secondary Lyme, which can present as a true cardiac or neurologic emergency.Copyright © 2023 Elsevier Inc. All rights reserved.

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