Abstract

Pulmonary nocardiosis and syndrome of inappropriate antidiuretic hormone secretion (SIADH) is an interesting association that has been rarely described in the literature. SIADH may be the initial sign of central nervous system progression. Here we present one such rare association of pulmonary nocardiosis and SIADH in an immunocompetent male, successfully managed with treatment of underlying disease and fluid restriction. High index of clinical suspicion even in immunocompetant hosts and effective management of associated complications is essential for successful outcomes.

Key words: Filamentous bacilli, Hyponatremia, Immunocompetent host, Pulmonary nocardiosis, Syndrome of inappropriate antidiuretic hormone (SIADH), Trimethoprim - Sulfamethoxazole (TMP-SMX)