This book provides valuable tools for the appropriate diagnosis and management of Lyme carditis. It includes epidemiological, pathophysiological and clinical recommendations for the identification, confirmation and management of the disease. With one score that currently facilitates diagnosing Lyme carditis when patients present with undiagnosed complete heart block (the  SILC Score ), a rapid recognition of Lyme carditis as the cause of conduction disorders is essential to allow early treatment with IV antibiotics with a high probability of complete resolution and avoiding unnecessary pacemaker implantation. Lyme carditis: From A to Z provides a clinical algorithm to facilitate management, pre-discharge evaluations of the conduction system and long-term follow-up of patients properly treated for Lyme carditis.