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.
Image by Flickr.com, courtesy of Bob Bobster. Tuberculosis (TB) is a disease caused by a bacterium called Mycobacterium tuberculosis, and can manifest in many different areas of the body. TB can be both active (resulting in disease) and inactive (asymptomatic infection).According to the Centers for Disease Control (CDC), a third of the world population is infected with tuberculosis, with 9 million becoming sick because of the disease.ctive Tuberculosis. Active TB implies infection of a host with the bacterium that causes TB coupled with an immune system that is unsuccessful in eliminating or corralling the pathogens.