I had the same problems with my son who is now 12 years old. We had him tested and he does have ADD. I feel it is better to know what your dealing with than to wonder. He had to have test in school and be seen by a neaurologist. Regarding the medications - we chose not to put him on any and found other ways to deal with the ADD. He is now in the 7th grade and get's B's and C's. We had to watch his diet. We kept a diary and when he ate something we waited a 1/2 hour and wrote what type of reaction he was having. Some foods triggered his aggressive, hyper spells such as the obviouse like soda, sugar, cake etc. but pizza also causes him to go into a hyper/aggressive spell.
Also, he has alot of energy and requires alot of attention. We had to sign him up for PAL football and that helped alot. He has so much energy that if he doesn't use it in a constructive way and will use it in disruptive way.
That's why i had to get banded to help keep him busy. We bowl, bike ride, he is into football, swimming, and rollerskating/blading.
It's hard without meds. but I believe it was the best for him. I don't like giving a child meds.
As he got older the aggressive/hyper spells became less and less.
Now he is 12 and has discovered girls l0l l0l l0l.
The best thing to do is find out for sure, then atleast you know what you are working with - you don't have to medicate him. If he is 6 and you choose not to medicate him it may take atleast a year or 2 to find out what triggers his aggressiveness and what you can do to help relieve it for him.
I hope this help,
pocket130