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.
Types of Rheumatoid arthritis. Types of Rheumatoid arthritis. There are two types of arthritis, rheumatoid arthritis and osteoarthritis. Rheumatic arthritis is caused by a generalized inflammatory process, believed to be an abnormal immune response or autoimmune response.