Reactive arthritis, also known as Reiter's syndrome, is a type of arthritis that develops in response to an infection elsewhere in the body. The disease is most common in men between the ages of 20 and 40. Most often, this infection occurs in the digestive tract or urogenital tract. Reactive arthritis can cause inflammation of the urinary tract, the joints, and the eyes. For most people, symptoms of reactive arthritis last 3 to 12 months; but for a small percentage of people, symptoms can return or develop into a long-term disease. Some examples of drugs that may be used to treat reactive arthritis include antibiotics, corticosteroids, immunosuppressive medicines, and nonsteroidal anti-inflammatory drugs (NSAIDs).