What does secondary tuberculosis mean?
Most people who develop tuberculosis, do so after a long period of latency (usually several years after initial primary infection). This is known as secondary tuberculosis. Secondary tuberculosis usually occurs because of reactivation of latent tuberculosis infection.
What is pulmonary tuberculosis caused by?
Pulmonary TB is caused by the bacterium Mycobacterium tuberculosis (M tuberculosis). TB is contagious. This means the bacteria are easily spread from an infected person to someone else.
What are types of tuberculosis?
- Active TB Disease. Active TB is an illness in which the TB bacteria are rapidly multiplying and invading different organs of the body.
- Miliary TB. Miliary TB is a rare form of active disease that occurs when TB bacteria find their way into the bloodstream.
- Latent TB Infection.
How do you explain tuberculosis?
Tuberculosis (TB) is a potentially serious infectious disease that mainly affects the lungs. The bacteria that cause tuberculosis are spread from person to person through tiny droplets released into the air via coughs and sneezes.
What does pathophysiology of a disease mean?
Definition of pathophysiology : the physiology of abnormal states specifically : the functional changes that accompany a particular syndrome or disease.
What is the difference between primary and secondary tuberculosis?
Primary and secondary TB are also thought to have characteristic radiographic and clinical features: primary TB is said to be characterized by lower-lobe disease, adenopathy, and pleural effusions, and termed atypical, whereas secondary, or reactivation, TB is associated with upper lobe disease and cavitation, termed …
What is reactive TB?
Secondary tuberculosis is usually due to the reactivation of old lesions or gradual progression of primary tuberculosis into chronic form. However, recent evidence suggests that reinfection is responsible for some of the secondary tuberculosis.