Juvenile rheumatoid arthritis criteria pls?

Complicated: There are different types of jra (now frequently called juvenile idiopathic arthritis) and different groups have set criteria. No way to list them all in 400 characters. This website has a pretty good breakdown of it though: http://emedicine.Medscape.Com/article/1007276-overview.

Joint swelling >6wks: Jia/jra - general guide 1. Age of onset <16 yr 2. Arthritis (swelling or excess joint fluid), or 2 or more of these: less than full range of motion, tenderness or pain on motion, & increased warmth in at least 1 joint 3.Above signs (seen by doc)for > 6wks 4.Type seen in first 6 mo: a.Polyarthritis: ≥5 inflamed joints b.Oligoarthritis: 4 or fewer joints c.Systemic -fever, arthritis 5.No other cause.