Final answer:
NSAIDs are typically the first line of treatment for Juvenile Idiopathic Arthritis to alleviate pain and inflammation, but not all children will outgrow the disorder, and participation in sports should be assessed on an individual basis.
Step-by-step explanation:
If a child is diagnosed with Juvenile Idiopathic Arthritis (JIA), it is not necessarily true that they will outgrow the disorder or that all of the children from these parents will have the disorder. It is incorrect to assume that affected children should not participate in sports; rather, physical activity should be tailored to individual capabilities and may actually be beneficial.
As for treatment, NSAIDs are commonly the first line of treatment to reduce pain and inflammation, but therapy is individualized based on disease severity and response.