add in 7 yr old

I need some help, my 7 year old has been showing signs of Attention Deficit for the past two years, it is really effecting his school work. Below are some details:

- 5 weeks premature
- Very oral, still puts things in his mouth
- Always moving and figity, feels the need to always have something in his hand
- Has a hard time focusing
- Can't pay attention in class, doesn't keep up with the teacher
- Can't sit still
- Talks when told multiple times to stop
- Very friendly but shy at first
- Was in a car wreck this past spring, he wasn't hurt, but it's taken awhile to not be scared in the car
- On occasion, wakes one or two hours early and can't go back to sleep no matter how hard he tries
- Has struggled with constipation and hard stools all his life

Thanks in advance for your help!