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The symptoms can be monoarticular (involving a single joint) or polyarticular (involving several joints). [1] Symptoms usually last for days to weeks, and often recur. Although any joint may be affected, the knees, wrists, and hips are most common. [4] CPPD crystals appear as shattered glass under the microscope.
Dactylitis, or "sausage digit", a diffuse swelling of a solitary finger or toe, is a distinctive feature of reactive arthritis and other peripheral spondylarthritides but can also be seen in polyarticular gout and sarcoidosis. Mucocutaneous lesions can be present. Common findings include oral ulcers that come and go.
About 10% of people with hyperuricemia develop gout at some point in their lifetimes. [19] The risk, however, varies depending on the degree of hyperuricemia. When levels are between 415 and 530 μmol/L (7 and 8.9 mg/dL), the risk is 0.5% per year, while in those with a level greater than 535 μmol/L (9 mg/dL), the risk is 4.5% per year.
Toe affected by gout. Monoarthritis, or monoarticular arthritis, is inflammation of one joint at a time (as opposed to oligoarthritis, which affects 2-4 joints, and polyarthritis, which affects more than 4 joints). It is usually caused by trauma, infection, or crystalline arthritis. [1]
This is a shortened version of the thirteenth chapter of the ICD-9: Diseases of the Musculoskeletal System and Connective Tissue. It covers ICD codes 710 to 739. The full chapter can be found on pages 395 to 415 of Volume 1, which contains all (sub)categories of the ICD-9. Volume 2 is an alphabetical index of Volume 1.
[10] Psoriatic arthritis is known to present in five distinct patterns: oligoarticular (affecting four or fewer joints); polyarticular (affecting five or more joints); prominent distal interphalangeal (DIP) joint involvement; arthritis mutilans; and psoriatic spondylitis. More than 70% of cases follow the oligoarticular pattern.
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RA affects about 24.5 million people as of 2015. [10] This is 0.5–1% of adults in the developed world with between 5 and 50 per 100,000 people newly developing the condition each year. [ 3 ] Onset is most frequent during middle age and women are affected 2.5 times as frequently as men. [ 1 ]