Share +. Text A A A. Rheumatoid arthritis (RA) is an autoimmune disease where the body's immune system attacks normal joint tissues, causing inflammation of the joint lining. This inflammation of the joint lining (called the synovium) can cause pain, stiffness, swelling, warmth, and redness.ext A A A. Rheumatoid arthritis (RA) is an autoimmune disease where the body's immune system attacks normal joint tissues, causing inflammation of the joint lining.
Tuberculosis. Tuberculosis (TB) is an infectious disease caused by a bacterium that usually attacks the lungs. TB is spread through the air from one person to another. The bacteria are put into the air when a person with active TB disease of the lungs or throat coughs, sneezes, speaks, or sings.
TB is an infectious disease caused by the bacteria Mycobacterium tuberculosis. TB disease most often affects the lungs, but can occur anywhere in the body. Some types of TB disease are contagious, and some are not. TB diseases of the lung or larynx are contagious.B is an infectious disease caused by the bacteria Mycobacterium tuberculosis. TB disease most often affects the lungs, but can occur anywhere in the body. Some types of TB disease are contagious, and some are not. TB diseases of the lung or larynx are contagious.