N.P.
Hi J., I'm certainly no expert, but I would suggest that you investigate whether you son is getting enough quality sleep, both daytime and nighttime and also see if some foods he is eating might be causing this behavior. Check out "Healthy Sleep Habits, Happy Child" by Marc Weisbluth, MD. He has studies sleep issues in children for years. I was amazed at what I learned about the physiology of sleep and how sleep patterns change as a child matures. Lack of quality sleep is can certainly bring on the types of behavior you have described.
If your son has a food allergy or food reaction, this can also trigger behavior issues. It is possible that he might be eating new foods containing additives, food colorings, high fructose corn syrup or other triggers of food allergies/reactions like wheat, sugar, soy, eggs, nuts, chocolate, dairy. I don't know of a specific book that deals with this issue in children, but I can recommend "The False Fat Diet" by Elson Haas, MD. Don't let the title make you think it's just a diet book. It has wonderful info on food allergies/reactions and ways to eliminate them from the diet, then reintroduce them one by one to see what is causing the problems.
Another thought... toddlers have incredible amounts of energy and need to run, play, excerise! Wear him out.
My sister in law swears by "The Happiest Toddler On The Block". I haven't read that one, but her issues she was having with her 2-1/2 year old are improving after she implemented ideas from that book.
My heart goes out to you and I wish you all thebest. N.