Tuberculosis (TB): Symptoms & Signs

Medically Reviewed on9/10/2019

Tuberculosisis a pulmonary (lung) infection byMycobacterium tuberculosisbacteria. Tuberculosis can be active (when symptoms occur and the organism can be spread to others) or latent, in which the infection is not causing symptoms because the body's immune system is keeping the infection under control.Fever,night sweats,coughing up blood(hemoptysis),shortness of breath,chest pain, andswollen lymph nodesare some of the symptoms and signs associated with active tuberculosis infection. In certain cases, the bacteria can infect the gastrointestinal tract, meninges surrounding the brain and spinal cord, urinary tract, or other sites within the body, causing symptoms that are specific to those areas.

Causes of tuberculosis

Tuberculosis is caused by a bacterial infection. The type of bacteria responsible for the infection isMycobacterium tuberculosis.

Other tuberculosis (tb)

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Bacterial Infections 101: Types, Symptoms, and TreatmentsSee Slideshow

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References
Kasper, D.L., et al., eds.Harrison's Principles of Internal Medicine, 19th Ed. United States: McGraw-Hill Education, 2015.
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