Hi Skynard:

I have a 4 year old saltwaster and asked the same question a few weeks ago because my son had been complaining of headaches.  Many suggested that it was the stress of school ending - he goes to special Pre-K for speech.  Now that the "stress" has gone away he does seem to be better.  It is hard to know when they are so young and can’t really communicate in a way to tell you exactly how they feel.

Good luck!

Kristin