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 is a serious disease caused by a bacterial infection of the lungs but can also affect other parts of the body, such as the brain, kidneys and bones.Tuberculosis, commonly known as TB, is caused by the bacterium Mycobacterium tuberculosis (M. tuberculosis) .eople with latent tuberculosis are not contagious and cannot spread the disease to others. However, anything that stresses the immune system, such as malnutrition or a chronic disease, can lower the bodyâs resistance and allow the bacteria to become active and multiply in the body.