My son is now 6 and started displaying PDD ADHD and possible Bi-Polar several months ago. We are still looking for a diagnosis. He seems to have auditory hallucinations, His speech has become very limited and he stopped using the toilet. I'm on several waiting lists to see a Developmental Pediatrician. I have nothing useful to add to this conversation but I'm thankful that I stumbled across it. I'm trying to learn as much as i can.

My son just got diagnosed bipolar with psychosis. He was hospitalized in a pediatric psychiatric unit for 10 days and on suicide watch for 2 weeks. I didn't know he was bipolar until his school put him on suicide watch and then a few days later, he tried to run in front of his school bus and got physical to me because I wouldn't let him. I am still not sure if I believe a 6 year old could be bipolar and schizophrenic, but the diagnosis does fit. There are a list of things that specialists are supposed to check such as thyroid, glucose, and autism to rule out similar symptoms before diagnosing bipolar. But, yes, they are "co-morbid" apparently.

My 5 year old has pdd-nos, ocd, spd, anxiety, & tics. I believe his mood swings of highs and lows are directly related to his diagnoses. Being unable to understand the world around you, rigidity, black and white thinking...add ocd, compulsive thought processes, being very strong willed and goal oriented, easily over stimulated causing flight or fight reactions, add high anxiety to it all, tics that are self modulating of a reaction of being over stimulated and you've got someone who appears bipolar.
Trust me, I questioned it. He was assessed as not bipolar. He IS however, on medication for anxiety. This, along with OT and behavior therapy has helped immensely. Good luck to you. Trust your gut. Best wishes!