Arthritis is an inflammation of the joints. It can affect one joint or multiple joints. There are more thanTrusted Source 100 different types of arthritis, with different causes and treatment methods.
Osteoarthritis (OA) is the most common type of arthritis. Other common typesTrusted Source include:
The symptoms of arthritis usually develop over time, but they may also appear suddenly. The typical age for developing rheumatoid arthritis (RA) is between ages 30 and 50. It can, however, affect children, teens, and younger adults. The symptoms of RA can include:
