I was a team leader in the UK and had an adult ADHD member in the team. I'm new on the forum but if you want to private message me, I can certainly go over the characteristics which were unique to this chap. You may find they're similar. The biggest issues we faced were one - people didn't know about ADHD, including myself at the time and two - in "no mistakes possible" jobs (and there are a few) a person with ADHD just isn't suited.
As I say, PM me if you like, or not:-)
The guy in my team was a great human being, but as his boss he was also my nightmare. Or hopefully find someone who specialises in this, though people with ADHD often have such distinctive traits that a professional diagnosis is often no more than running through a checklist.
I did have a professional psychologist diagnose Narcissistic Personality Disorder in the same team (but that's another story! :-)
Duncan