Reactive arthritis

	Main Article	Discussion	Related Articles  [?]	Bibliography  [?]	External Links  [?]	Citable Version  [?]
	This editable Main Article is under development and subject to a disclaimer. [edit intro]

In medicine, reactive arthritis is an "aseptic, inflammatory arthritis developing secondary to a primary extra-articular infection, most typically of the gastrointestinal tract or urogenital system. The initiating trigger pathogens are usually shigella; salmonella; yersinia; campylobacter; or chlamydia trachomatis. Reactive arthritis is strongly associated with HLA-B27 antigen."^[1] In simpler terms, it is an inflammation of a joint that develops after an infectiou outside a joint.

While the arthritic inflammation must be treated, a careful search must be made for remaining infection, and, if any is found, treated.

Epidemiology[edit]

The frequency of reactive arthritis after an infection is estimated to be 0.6 to 3.1 cases/100,000.^[2]

References[edit]