One idea is to give your son some Bach Flower Remedies. These harmless little vials contain plain water. They
re harmless even for babies and pregnant/nursing mothers.  If you can call a Bach Flower practitioner that would be very helpful. However, you can just borrow a Bach Flower book from the library or purchase one on-line or check the www.bachcentre.com website in order to get some ideas of which remedies might help your son enjoy a more balanced daily mood. Bach Flower remedies have no side-effects and they actually help to prevent recurrences of the problem you are treating; they help a person become their best selves.  Bach Flowers are most appropriate when the problem is a mood issue rather than a behavioral problem.