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What is Palindromic rheumatism (PR)

Palindromic rheumatism (PR) is an autoimmune related disease characterized by sudden, multiple, and recurring attacks of joint pain and swelling, typically in the hands and feet. Each episode may last from several hours to several days. The frequency of attacks also varies, from one episode a day to several during the course of a year. Between attacks, the symptoms disappear and the affected joints appear normal on x-ray exams. The cause of palindromic rheumatism is unknown, although a possible allergic origin has been suggested. There may also be a clinical association between antiphospholipid syndrome and palindromic rheumatism. Some individuals with palindromic rheumatism develop chronic joint inflammation and go on to develop rheumatoid arthritis.

Palindromic rheumatism (PR) is a type of recurrent arthritis characterized by episodes or “attacks” of joint inflammation, sequentially affecting one to several joint areas for hours to days.[1][2] A PR attack often occurs suddenly without any obvious triggers or warning symptoms. Any joint(s) may be affected, but finger joints, wrists, and knees are most commonly affected.[2] Symptoms during episodes may include pain, swelling, stiffness, and redness in and around the joints.[2] Some people may have a fever and other systemic symptoms.[3] Between episodes, people with PR have no symptoms.[2] The time between episodes may last from days to months.[1]

The underlying cause of PR is not known.[2] Some people with PR eventually develop chronic rheumatic disease, the most common being rheumatoid arthritis (RA). Others may develop lupus and/or other systemic disorders. People with anti-CCP antibodies detected in a blood test appear more likely to develop RA.[1] There has been some evidence to support that PR can be a presenting feature of RA (or part of the spectrum of RA), rather than a distinct condition.[2] [4]

Treatment of PR is challenging, as it has not been studied in randomized trials.[5] Nonsteroidal anti-inflammatory drugs (NSAIDs) may be used to treat acute episodes. Disease-modifying antirheumatic drugs (DMARDs) may be an option for those with refractory, frequent attacks.[5] Hydroxychloroquine (a DMARD) reportedly may help control attacks and reduce the risk of progression to RA.[2][4]

This information is provided by the National Institutes of Health (NIH) Genetic and Rare Diseases Information Center (GARD).
https://rarediseases.info.nih.gov/diseases/7304/palindromic-rheumatism

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