What is reactive arthritis?
Reactive arthritis is an uncommon condition that can make your joints swell and hurt, similar to the pain of arthritis. "Reactive arthritis" means your immune system is reacting to an infection you already had. One kind of reactive arthritis is called Reiter's (say: "rite-erz") syndrome.
Source
Reactive Arthritis (Reiter's Syndrome) by WF Barth, M.D. and K Segal, M.D. (American Family Physician August 01, 1999, http://www.aafp.org/afp/990800ap/499.html)
Written by familydoctor.org editorial staff
Reviewed/Updated: 01/11
Created: 08/99