Because women may be underdiagnosed, the exact incidence of<unk>  is difficult to estimate. A few studies have been completed, though. In Norway between 1988 and 1990, the incidence was 4.6 cases per 100,000 for chlamydia-induced<unk>  and 5 cases per 100,000 for that induced by enteric bacteria. In 1978 in Finland, the annual incidence was found to be 43.6 per 100,000.
Reactive arthritis
Behçet's disease
Rheumatoid arthritis
Septic arthritis
Psoriatic arthritis
Plantar fasciitis
Inflammatory arthritis
Rheumatism