I'm putting this topic up as a lot of people seem to need a little initial advice before approaching their doctor on the subject of whether they might be ADHD, including myself.

I took the ADHD quiz on a whim and was expecting it to say that I was perfectly fine in that regard but, shockingly for me, I got a seriously high score. This made me think back on the problems I've had during my life in the context of ADHD and a lot of stuff started to make a lot more sense. Even things from a very young age.

So my questions to anyone with experience in this area are:

Is it possible that I have lived with this my whole life and it has gone undiagnosed?

and

Should I ask my doctor to test me for it (I don't know very little about ADHD testing so I'm not sure what that would involve)?