When Did you know your child had BiPolar (BP). Sammy is turning 3 in June and his therapist and I were talking about his patterns of behavior. He said off the record that it sounds like he is having manic episodes. I totally agree. We have suspected BiPolar (BP) for a long while. We have said that we would not be surprised of this was his diagnosis or some kind of mood disorder even ADHD. Really, I just want your thoughts on the early signs you guys noticed. Really what can they do with a 3 year old? Thanks for your thoughts and wisdom!