Isolated laryngeal tuberculosis is rare and presents less than 1% of the manifestations of this disease, it poses a problem of differential diagnosis with other affections mainly tumors. The aim of this work is to emphasize the diagnostic difficulty of this entity and its management. We report the case of a 21-year-old patient hospitalized for progressive dysphonia. Endoscopy showed an ulcerous-budding process of the two vocal cords (which were mobile) extending to the laryngeal vestibule and vestibular bands. The histological examination of the biopsies performed was in favor of a caseo-follicular tuberculous laryngitis. An anti-bacillary treatment has been introduced which has allowed a total resolution of clinical, biological and endoscopic signs. La is healthy 2 years after the end of treatment.