Diagnosis and treatment of tuberculosis presenting as uveitis based on stochastic simulation in systems biology.

Tuberculous uveitis can be a manifestation of extrapulmonary tuberculosis or an allergic reaction to tuberculosis infection. The clinical signs and symptoms of other uveitis causes are generic, making a false diagnosis simple. We present a brief introduction to theoretical modelling and simulation in systems biology and explore the consequences of TB uveitis if left untreated. Patients were admitted to our hospital with recurrent fever. They had a previous definitive diagnosis of binocular uveitis and a positive interferon gamma release assay (IGRA) test result. At the time, there was no antituberculosis medicine available, and immunosuppressive and glucocorticoid therapy did not work. After the admission, their pleural fluid tested positive for Mycobacterium tuberculosis. No other causes to explain the fever were found. A diagnosis of tuberculosis was made, and their body temperature normalized after antituberculosis treatment and closed chest drainage. Vigilance should be exercised to rule out tuberculous uveitis in cases of unexplained uveitis; this calls for IGRA screening, tuberculin skin testing, and cyst imaging. For patients with latent tuberculosis infections, it is recommended to administer antituberculosis treatment, after excluding other possible causes, and to avoid using glucocorticoids in isolation.