Much what you described could be related to depression and anxiety- poor memory, trouble concentrating, thoughts bouncing around in your head that seem to never end, angry outbursts.

When I was checking around for someone to evaluate/assess me, I was told to contact either a psychiatrist or psychologist. Either one will probably want to wait on assessing you, because as I stated, it's sometimes hard to discern what your symptoms actually are because the symptoms of AD/HD can mimic or like depression, anixety etc. If you have a history of anything like that that you are certain of, I would suggest (as would the pdoc or psych) getting treatment for that first. Those troublesome symptoms may disappear. It's hard to go thru your insurance company for an eval of adhd if you are an adult- i have first hand experience with this. AND paying out of pocket will wreak havoc on your pocket. I called on doctor who told me it would cost $500 out of pocket for the eval.

But if you insist on being evaluated right away for AD/HD I would suggest calling your insurance provider (if you have one)- they can give you a list. Or, go to your PCP and ask him/her for a referral. That would be the easiest route. When I was making my calls, I made a bunch of pointless calls to people who do not assess for AD/HD so I called my insurance provider for a list, which also wasn't very helpful. Sometimes there are "centers" or programs that are specifically for AD/HD assessing and treatment (finally found one in the city I will be relocating to in a few weeks). So check around in your town/city. Good luck.