This is probably far fetched but thought I'd make this comment.

A few years ago my grandson who is now 15 complained about a lot of pain. He's a very active boy, tennis player, vollyball and just always in motion. The pediatrician said it's probably growing pains and more exaserbated by his constant motion. Just a thought.

http://www.mayoclinic.org/diseases-c...n/CON-20029782