Complete heart block revealing adrenal tuberculosis

Complete heart block is a commonly encountered entity in clinical cardiology practice, which may be secondary to a variety of diseases including metabolic disorders. Here, we report the case of a 60-year-old female patient who presented with persistent symptomatic complete heart block despite the correction of electrolyte disorder and required admission for permanent pacemaker implantation. The etiologic investigation revealed underlying adrenal insufficiency due to tuberculosis. The clinical and biological presentation of adrenal insufficiency is variable with a difficult etiologic assessment. Although cardiac manifestations are rare, significant electrocardiographic abnormalities can be observed in untreated adrenal insufficiency, such as conduction abnormalities. Hence, in our case, we highlight one of the rare etiologies of conductive disorders and the complexity of the extrapulmonary manifestations of tuberculosis that clinicians should be aware of it.