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.
Fast Facts. Rheumatoid arthritis (RA) is the most common type of autoimmune arthritis. It is caused when the immune system (the bodyâs defense system) is not working properly. RA causes pain and swelling in the wrist and small joints of the hand and feet. Treatments for RA can stop joint pain and swelling.