Classification based on organ manifestation. In 80% TB manifests in the lung but can occur in other organs as in the pleura, central nervous system, genitourinary system, lymphatic tissue, bones and joints. Widespread TB is called miliary tuberculosis and constitutes roughly 10% of extrapulmonary TB.
Treatment: Six-month four-drug regimen namely six months of daily treatment with rifampicin and isoniazid. Pyrazinamide and either ethambutol or streptomycin are supplemented in the initial two months.