S.W.
Trileptal needs to be built up in the system so he may want to try it for longer than a month. My son was on it for a long time and had great success with it. Thankfully, he no longer needs to be on mood stabilizers so he is not on them anymore. We tried to use it in conjunction with other drugs with no success, too many side effects from the other medications so we stuck with trileptal. It works very well and has been around for quite a long time so there is alot of case studies to look at for long term affects.
I think that these people (doctors) get paid to diagnose our problems and sometimes we have to give them the benefit of the doubt, I say try it for a few months, monitor him closely and hopefully it works out. There is not much of a difference between ADHD and what you describe he was diagnosed with. Its pretty amazing how mood disorders work and how complex they can be to diagnose. There is no harm in getting a second opinion after you have given this a try. Best of luck, it is challenging to live with a person who has unstable moods, you must be a strong woman.