It is possible that the main title of the report Reactive Arthritis is not the name you expected. Please check the synonyms listing to find the alternate name(s) and disorder subdivision(s) covered by this report.
Reactive arthritis is a general term for a form of joint inflammation (arthritis) that develops as a "reaction" to an infection in another area of the body (i.e., outside of the joints). Joint inflammation is characterized by redness, swelling, pain and warmth in and around the affected joint. In reactive arthritis, the large joints of the lower limbs and the sacroiliac joints are most often affected. Two other common symptoms of reactive arthritis are inflammation of the urinary tract and inflammation of the membrane (conjunctiva) that lines the eyelids (conjunctivitis). These three characteristic symptoms may occur separately, all at once or not at all. Additional symptoms such as fever, weight loss, lower back pain and heel pain may also occur. Reactive arthritis usually develops following a bout with certain bacterial infections including Chlamydia, Salmonella, Shigella, Yersinia, and Campylobacter.
Reactive arthritis belongs to a group of related disorders known as the spondyloarthropathies. These disorders are linked by the association of similar symptoms and a specific genetic marker called HLA-B27. Symptoms common to these disorders include arthritis, especially of the lower limbs, lower back pain and enthesitis, a condition characterized by inflammation at the spot where skeletal muscle attaches to bone. This group of disorders includes reactive arthritis, ankylosing spondylitis, psoriatic arthritis, undifferentiated spondyloarthritis and spondyloarthritis associated with inflammatory bowel disease.
Reactive arthritis is a poorly defined disorder that has been described in the medical literature under many different names. No precise diagnostic or classification criteria have been developed that are universally agreed upon in the medical community.
Spondylitis Association of America
P.O. Box 5972
Sherman Oaks, CA 91413
American Autoimmune Related Diseases Association, Inc.
22100 Gratiot Ave.
Eastpointe, MI 48021
1330 West Peachtree Street, Suite 100
Atlanta, GA 30309
Sexuality Information and Education Council of the U.S.
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New York, NY 10038
Centers for Disease Control and Prevention
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Atlanta, GA 30333
393 University Avenue
Ontario, M5G IE6
NIH/National Institute of Arthritis and Musculoskeletal and Skin Diseases
One AMS Circle
Bethesda, MD 20892-3675
Ocular Immunology and Uveitis Foundation
5 Cambridge Center
Cambridge, MA 02142
Genetic and Rare Diseases (GARD) Information Center
PO Box 8126
Gaithersburg, MD 20898-8126
PO Box 241956
Los Angeles, CA 90024
Autoimmune Information Network, Inc.
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Brick, NJ 08723
11688 North Sage Brook Road
Oro Valley, AZ 85737-7342