Driving permissions and insurances are a common one, but also: suddenly being deemed medically unfit to do various other things such as possess and use firearms, scuba dive, fly aircraft, etc.
What strikes me as absurd about all this is that they always had ADHD, but once they got it diagnosed and started managing it, they are deemed unfit to do a load of shit.
The FAA doesn't look kindly on ADHD diagnoses for people looking to get pilots licenses, even private. It adds a bunch of extra hoops to jump through.
There are also restrictions on medications you can take and still fly a plane.
(ADHD is a recognized disability under ADA.)
There are public safety provisions allowed, for example, if you are bipolar, you can not be a commercial airline pilot. Driving a car does not meet the public safety exceptions.
Not so in the case, you might lose it for months if you move and switch doctors.