Hi T.,
I think trying a chiropractor is a great idea. I know many people don't believe in it, or have this idea that it's not safe, espeically for younger people, but to be honest, that's because they're not educated in it enough (in my opinion). My boys have been seeing one since they were babies and I think it's a really important part of our overall health. I don't know anyone in Dayton, OR, but I can tell you what I suggest looking for in a chiropractor.
1. Someone who assesses and adjusts your entire body each visit, including your knees, feet, arms, etc. (It's not just your back and neck that get out of alignment and everything is connected so an adjustment in one place affects many others.) Also not just getting into an adjustment routine and doing the same adjustments each time. Sometimes different things are out of balance, so your son should be assessed EACH visit.
2. Someone who listens to what's going on and explains things well.
3. Preferably someone recommended (there are too many chiropractors out there that are not good).
4. Someone who's open to using an activator rather than always doing general adjusting. (Although my previous chiro didn't think that activators worked all that well, my new chiropractor uses it primarily and our adjustments last a lot longer, and it's easier to adjust places like your knee or your head [cranial plates] or anything like that if necessary.) It's also less intrusive, especially for little ones and the pressure is easily adjusted. If you're not sure what an activator is, it's just a tool with a rubbery tip that does a quick jab of pressure where it's placed (it's not painful at all!) to adjust you rather than hand pressure or twisting, etc.
5. Someone who doesn't request you to come in once a week or more without a good reason. (Sometimes initial visits should be closer together to get your body in line, but it shouldn't continue like that for too long unless there are serious issues to address.) Every two to three weeks (or less) should be sufficient for most people.
6. It's not necessary, but something that might be good is to find someone who's either a parent and/or has other patients that are children, so they will be better at making the child happy and comfortable during the visits.
I also suggest that you're somewhat open with your chiro about other issues your son might be having (digestional, headaches, ear infections, sinus issues, etc.) because adjustments can help significantly with all of that!
Although chiropractics can help with many things, I also suggest trying other things, like exercise and diet. Not just eating well, but cutting out sugars, additives, preservatives and food coloring (especially red and yellow's). Our bodies need to be balanced on many levels and often there isn't just one answer - it's a matter of finding the right combination of things that work. Sometimes it's just personality too. Although being ornery isn't easy to deal with and should be kept at bay, it's also a sign of intelligence and inner strength. (Not trying to sound all Earthy here.) ;o)
You may want to consider taking him to see a Naturopath too, so you can find out if there's anything else going on (possibly food sensitivities, or something else?). A Naturopath really takes the time to listen and help you figure things out. (Though there are always good ones and not as good ones, so be aware.) Most MD doctors will not look into things as well or as openly as a Naturopath. Most just follow their textbooks and try to whip through their appointments in 10 minute intervals (since that's how insurance companies pay them).
I hope you find someone that can help you out! Best of luck to you!