Abstract
The authors describe a case of a rare infectious disease of intra-articular tissues of the temporomandibular joint caused mainly by Pseudomonas aeruginosa. In scientific literature, under the heading invasive (malignant) external otitis, we can find cases of an infectious disease of the external acoustic meatus caused by a microbial agent of Pseudomonas aeruginosa which can subsequently penetrate into structures. However, a primary affliction of the abovementioned structures has not been described. Localisation and severity of the infection requires long-term and massive treatment with antibiotics.