I watched a student nearly drop out due to unmedicated ADHD, and then return following diagnosis and medication. She completed a fantastic, award-winning dissertation on her return - one of the best I have supervised at Plymouth. She always had the ability, just needed her ADHD under control.
I don’t know a lot about ADHD but i do know a young guy who struggled a lot and might not have finished university who got diagnosed and treated, then did extremely well, and now makes a boatload of money at a good job I thought "getting people into work" was labour's whole thing