Postsalmonella reactive phenomena in 2 patients with ankylosing spondylitis: no modification of the underlying disease.

HLA-B27 related disease occurs in 2 main forms, ankylosing spondylitis (AS) or reactive arthropathy/Reiter's syndrome. These entities often "breed true" within families or distinct ethnic groups. Reactive arthropathy/Reiter's syndrome may be complicated by AS, but little is known about the impact on AS of a de novo reactive arthropathy occurring at a later date. We describe 2 patients with AS who developed postsalmonella reactive phenomena several years after the onset of their primary disease. In both patients the intestinal salmonella infection did not modify the course of the AS.