Answer:
An autoimmune disease is the result of the immune system attacking its own healthy cells and tissues. An example of this disease is rheumatoid arthritis, which attacks the joints; hence, becoming them to be inflamed.
Step-by-step explanation:
To counteract this effect, painkillers, steroids, and anti-inflammatory drugs are taken to reduce this inflammation and pain in the joints. Physical therapies and surgeries are also performed to treat this disease.