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.
Tuberculosis (TB) is a highly infectious disease that is caused by strains of bacteria that belong to the Mycobacterium tuberculosis complex. Though TB mainly affects the lungs, it could also affect other parts of the body.A person is diagnosed with pulmonary tuberculosis, when the lungs get infected.n active TB disease of the lungs, airways, or larynx is considered to be highly contagious. Factors that are associated with contagiousness include the presence of cough and cavity in lungs. The causative bacteria can spread to others when a person affected by pulmonary tuberculosis disease coughs or sneezes.