Due to the symptoms of<unk>  arthritis and the nature of the attacks, diagnosis can be difficult or take a long time. The symptoms can be similar to many other forms of arthritis or other autoimmune diseases. It is often a case of eliminating the other conditions before getting the correct diagnosis due to there being no specific test for PR diagnosis. No single test can confirm a diagnosis. A doctor may make a diagnosis based on medical history and signs and symptoms.<unk>  must be distinguished from acute gouty arthritis and an atypical, acute onset of rheumatoid arthritis (RA). Without specific tests (such as analysis of joint fluid), it may be difficult to distinguish<unk>  from other episodic joint problems. It is important to note that a person may experience more than one autoimmune disorder at the same time, as overlap syndrome. Laboratory findings are usually normal. Blood tests may show an elevation of the ESR and CRP, but are otherwise unremarkable. Rheumatoid factor may be present especially in the group that is likely to develop rheumatoid arthritis. Proposed classification by Guerne and Weismann in 1992: * A 6-month history of brief sudden-onset and recurrent episodes of monoarthritis or rarely polyarthritis or of soft tissue inflammation. * Direct observation of one attack by a physician. * Three or more joints involved in different attacks. * No radiologic evidence of bone or joint erosion. * Exclusion of other arthritides, such as rheumatoid arthritis (RA), systemic lupus erythematosus (SLE), or gout
Palindromic rheumatism
Compression arthralgia
Metatarsalgia
Dactylitis
Ankle flare
Panniculitis
Facet joint injection
Diabetic cheiroarthropathy