M. Leirisalorepo, PROGNOSIS, COURSE OF DISEASE, AND TREATMENT OF THE SPONDYLOARTHROPATHIES, Rheumatic diseases clinics of North America, 24(4), 1998, pp. 737
Prognosis in the majority of patients with acute reactive arthritis is
usually good, with most patients recovering in a few months. In about
15% to 30% of such patients, the disease progresses, and spondyloarth
ropathy and even ankylosing spondylitis develop in the following 10 to
20 years. A recurrent attack of reactive arthritis is common in patie
nts with chlamydia-triggered arthritis, but it is rare in patients who
have had enteroarthritis, In patients with chronic spondyloarthropath
y without evidence of preceding infection, the disease can progress sl
owly into ankylosing spondylitis. When reactive chlamydia arthritis is
indicated, a prolonged course of antibiotics is needed. For other for
ms of reactive arthritis, solid evidence in favor of antibiotic therap
y is still lacking. Presence of hip pain, decreased mobility of thorac
ic cervical or thoracic spine, heel pain, inflammatory gut lesions, hi
gh erythrocyte sedimentation rate, positive family history and presenc
e of human leukocyte antigen B27 are indicators for chronicity. Sulfas
alazine might be of use in chronic arthritis and ankylosing spondyliti
s, especially if the patient has peripheral arthritis.