Arthritis

Juvenile Rheumatoid Arthritis - Learn about this specific kind of arthritis that usually occurs in kids and teens under age 17. Includes the three types, what doctors do, and living with this condition.
http://www.kidshealth.org/teen/diseases_conditions/bones/juv_rheumatoid_arthritis.html

The Facts About Arthritis - Arthritis Foundation information about how many people have this condition and what types they have. Also explains symptoms for each type.
http://www.arthritis.org/facts.php

Teens First for Health: Arthritis - Discusses what this condition is and the most common type to affect teens. Includes information about joint damage, remission, and flares.
http://www.childrenfirst.nhs.uk/teens/health/conditions/a/arthritis.html

Kidshealth: Juvenile Rheumatoid Arthritis - Learn about what doctors do, three different kinds of JRA, and how it's different than what older people have.
http://www.kidshealth.org/kid/health_problems/bone/juv_rheum_arthritis.html