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.
A. Tuberculosis is not a hereditary disease. It is an infectious disease. Any person can get afflicted with TB. Whenever, a patient having active tuberculosis coughs or sneezes in an open manner, bacteria causing TB come out in the aerosol. This aerosol can infect any person who happens to inhale it.t is an infectious disease. Any person can get afflicted with TB. Whenever, a patient having active tuberculosis coughs or sneezes in an open manner, bacteria causing TB come out in the aerosol. This aerosol can infect any person who happens to inhale it.