Tb what does it look like

Other tests include X-rays and sputum tests. A blood test can be done in place of the TB skin test. If you will be spending time with a person or people with active TB, wear a face mask and try not to stay in a small enclosed space with poor ventilation. People who work in situations where there is a high risk for encountering people infected with TB, such as healthcare workers, should be tested for TB on a routine basis.

In countries outside the U. Health Home Conditions and Diseases. The following are the stages of TB: Exposure. This happens when a person has been in contact with, or exposed to, another person who has TB.

The exposed person will have a negative skin test, a normal chest X-ray, and no signs or symptoms of the disease. Latent TB infection. This happens when a person has TB bacteria in his or her body, but does not have symptoms of the disease. The infected person's immune system walls off the TB organisms, and the TB remains inactive throughout life in most people who are infected. This person would have a positive skin test, but a normal chest X-ray.

TB disease. This describes the person who has signs and symptoms of an active infection. The person would have a positive skin test and a positive chest X-ray. What causes TB? If there is a bump, it will go away in a few weeks. The test is "negative" if there is no bump or only a very small bump at the spot where the fluid was injected. A negative TB skin test usually means that you don't have TB. The test is "positive" if there is a bump of a certain size where the fluid was injected.

This means you probably have TB germs in your body. Most people with a positive TB skin test have latent TB infection. To be sure, your doctor will examine you and give you a chest x-ray. You may need other tests to see if you have active TB disease. The TB Tuberculosis Skin Test Mantoux This fact sheet gives information about how the skin test is given and read, and what the results mean.

What is latent TB infection? This phase can last for a very long time — even many years. TB germs are active and spreading. This content does not have an English version. This content does not have an Arabic version. Overview Tuberculosis TB is a potentially serious infectious disease that mainly affects the lungs. Request an Appointment at Mayo Clinic. Share on: Facebook Twitter. Show references Basic TB facts. Centers for Disease Control and Prevention.

Accessed Dec. Jameson JL, et al. In: Harrison's Principles of Internal Medicine. McGraw-Hill; Mayo Clinic; Tintinalli JE, et al. McGraw Hill; Related Associated Procedures Chest X-rays. CDT Expert Alert: Precision medicine, digital technology hold potential as powerful tools against tuberculosis March 22, , p. A doctor can do a simple test to determine if you….

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