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Juvenile Onset Arthritis (JOA)
There's no specific test for JOA, but as it can affect your eyes first, so your doctor might check them to see if you have uveitis. Your doctor will ask you lots of questions about your joint pain - like which joints hurt and at what time of day and how often. He or she will check for swollen joints, take your temperature if you have a fever, and look at any rash you might have.
You might also have a scan, like an x-ray, CT scan or MRI. If you have polyarticular JOA or systemic JOA your doctor may check that your internal organs aren't swollen too.