she is 21 now, and i honestly never thought i would see it.
i would recommend
http://thebipolarchild.com the folks behind this site, and books, have really written the book on the differences in symptoms, etc, in kids.
one thing that they have recommended is cold water fish oil, i believe 1 gram/day, alone or with medication. i mention it because getting to medication, let alone the right medication, can take a long time, and this is something that you can start tomorrow. get it from a health food place, and get the salmon oil. that is the best.
this is a special hell right here, and i wish you well. fwiw, mine is now doing very well. but it took a hell of a lot of work, and help. if he is a problem in school, get him started on an iep NOW. the process is slow, but once it is started there are protections and accommodations, and rules. they will have to have the school shrink evaluate him, but if you can manage it, see if you can find someone who can do it privately. that person can be your advocate at hearings, and is worth whatever you can afford to pay.
good luck. check in and let us know how it goes.