In 2005, the mutual insurance company became NGM Insurance Company with the conversion to a mutual holding company structure and the formation of Main Street America Mutual Holdings Inc. The company also redomesticated to the State of Florida.
Rheumatoid arthritis (RA) is an autoimmune disease that causes inflammation of the joints. Because many symptoms of RA are similar to those of a variety of other diseases, diagnosis can be difficult. A correct diagnosis requires clinical evaluation, X-rays, and a series of laboratory tests.
Overview. An autoimmune disease is one in which the body's immune system mistakenly attacks normal cells. In autoimmune arthritis, called rheumatoid arthritis (RA), the immune system attacks the lining of the joints.