My nine year old son is having regular episodes of sore throat , headache (all over head) and stomach ache. These episodes seem to come and go. They have become more frequent lately. I can t seem to find any particular cause for them, and they don t seem related to his food or water intake. He is a happy and outgoing kid, and this has been going on for a few months now. When it comes on, I can see a change in his demeanor, as well as a slight paleness to his face. Any ideas would be appreciated.