My 12 yo daughter has ptsd, adhd combined type, and odd. lately the odd has been taking the cake. is it possible that treating the odd with low dose risperdal could also help her focus/attention and motivational issues as well? thank you?

With this variety of conditions, you daughter would benefit from a coordinated health care team including her primary pediatrician, a psychiatrist, a cognitive behavioral therapist and social worker. Any medications/therapies would be best discussed with the team as they would have complete knowledge of her past situations, medications and other health issues.