I think the ADHD for some is easier to accept. There is definitely more stigma associated with BP and for a while ritalin was being dispensed to children like candy! I am definitely not an expert or a doctor, but because many of the symptoms of ADHD and ADD are shared with BP that's where I can see there being an issue with misdiagnosis. However, a person can definitely have a dual diagnosis of ADD/ADHD and BP. BP can be a difficult illness to diagnose because the symptoms aren't continuous, so if I only see my p-doc when I'm depressed he or she may miss the diagnosis. I was lucky that I went hypomanic in the hospital, so I received an accurate diagnosis quite quickly considering I had never reached out for help for mental issues before.