I was diagnosed about 7-8 years ago, and I was in my early/mid 30s at the time. I was referred to a specialist by my pcp, and they started out by asking me some questions about my symptoms and whatnot. The final thing I had to do was take this computerized test thing that involved looking at a screen while doing some simple stuff. There were cameras that tracked my eye movement to determine how long I was appearing to focus on what I was supposed to be looking at (versus anywhere else on the screen or in the room). Afterwards, we talked about what meds/dosage to start out with. For the first 6 months or so I was going in almost monthly to adjust my dosage and/or switch meds entirely. Once we found something that worked, I started going in every 2-3 months to check in. Overall, not an unpleasant experience.