The American Chronic Pain Association is good place to start:
* They have a completely wonderful, fifteen point pain log that can track everything from your child's pain to their, mood, to how they're feeling about the pain, and their comprehension levels.
* Also, on their Home page, the ACPA has a Resource finder with a search box and a diverse Condition drop box that will be useful.
* The search bar does have an age/demographic option as well, but, sadly, it starts with adolescents, and does not show pediatric as an option. Still, this is an excellent site.