[februus]

Could be something serious like this:

http://kidshealth.org/parent/medical/heart/kawasaki.html

[Pining_4_TX]

Thank you for the link. It is one of the things we considered. He has some of these symptoms but others don’t match. I will mention this possibility to my daughter again so she can ask the doctor.

As far as I am concerned, they should consider anything and everything until they can rule them out.

[utahagen]

I, too, think it could be Kawasaki Syndrome. In any case, I'd drive him to the best hospital within 200 miles — “best” meaning affiliated with a university and highly ranked — and go to the emergency room and wait however long you have to until he's admitted. Then, refuse to check him out until until he is well.