Polyarthritis is any type of arthritis which involves five or more joints — an inflammation of two, three or four joints is an oligoarthritis.
Polyarthritis is most often caused by an auto-immune disorder such as Rheumatoid arthritis, Psoriatic arthritis, and Lupus erythematosus but can also be caused by infections such as Ross River Virus. It is recommended that individuals with this affliction sleep on a firm mattress and a flat pillow. Polyarthritis may be experienced at any age and is not gender specific.
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