12 yo new diagnoises IED,ODD,ADHD need advice

My 12 year old son has currently been diagnoised with Intermittent explosive disorder , also Oppositional defiant disorder along with already know adhd.
He has been having behavior problems for years and it just got to where there was no controling/helping him in his rages so I seeked medical help. He is currently in the hospital a week today and maybe in till at least next week. He is on meds, getting lots of differ therapy /couceling.

What I am in need ofis advice, tips etc on what I can do on my part to help him, how or what I can to do when he is in one of the rages as I am now afraid for my daughter whos only 2.
Any info will be greatly appreciated as I have also seeked help from services just waiting to hear back what I can get help with.
Thanks in advance
a concerned mom

It sounds possible that he may be having an underlying condition that you are not aware of. Do you notice that there are certain things that always trigger his rage or explosive behavior? Do they happen certain times of day, with certain people or certain places?
Here are some additional things that have been known to trigger and be correlated with aggressive, irritable behavior -

Red or Blue Food Dyes - huge one! My son can't have red food dye, particularly #40 or he becomes like Tazmanian
Allergies
Ashtma - medications especially, such as albuterol or pulmicort
Improper sleep - he should be getting 9-11 hours each night
Frequent television, music or video games with aggression or violence

This program is effective:
http://www.squidoo.com/total-transformation