Hi. I have been visiting this site for about a year now but this is the first time I have posted. I have a 4 year old son who is having major behavior problems. I first noticed he was "different" at around 20 months. No history of medical problems, normal birth, no speech delays. Any way to make a long story short we (psychologist, occupational therapist and myself) suspect he could have either ADHD or Aspergers (or both). The psychologist recommends behavior therapy along with medications. He says it is likely he will get kicked out of his new preschool in the fall if he continues with the behaviors he as now. Which are: hitting alot, whining/screaming when he is frustrated, negative demeanor the majority of the time, impulsive, non compliant, infelxible (yes I have read the Explosive Child), fixation on feet (i know it's weird). My question is : How do you get the right diagnosis? I feel like he meets alot of the criteria for adhd, aspergers, odd, anxiety disorder, He does see a behavioral therapist and goes to Occupational Therapist (OT) twice a week. He has some motor planning issues. I just want to help him succeed and be happy but I feel lost. Thanks for listening.