Polyarticular JIA (polyarthritis)

Polyarticular JIA, or polyarthritis, is the second most common type of JIA and affects 5 or more joints.

It can affect a child of any age and may come on suddenly or develop gradually.

The symptoms of polyarticular JIA are similar to the symptoms of adult rheumatoid arthritis.

A child with the condition may also feel unwell and may occasionally have a high temperature of 38C or above.

Find out more about rheumatoid arthritis

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