A great many adults with an ADHD diagnosis received it in adulthood rather than as a child. It is no longer an unusual situation, though it can feel like one at the time.
Two things tend to arrive together afterwards. A great deal of retrospective reinterpretation, and an unexpected pile of administration.
The reinterpretation comes first
Most people spend the following months revisiting the past: jobs that went wrong, a degree that took longer, relationships where the same argument kept happening, the persistent sense of underperforming relative to effort.
That process is worth having and it is not the subject of this guide. The subject is the far less discussed part, which is that a diagnosis creates work.
The admin that follows
Very little of this gets mentioned in the appointment.
6 things to do
Ticks are for this visit only. Nothing here is saved anywhere.
The irony is not lost on anybody
A condition characterised by difficulty with sustained administration is diagnosed, and the treatment pathway is administration on a recurring schedule with real consequences for missing a step.
Naming that is genuinely useful, because people tend to interpret struggling with it as evidence they are handling the diagnosis badly. It is not. It is the single least accommodating part of the process.
What helps with this specifically
Treat the repeat prescription cycle as a recurring appointment rather than as a task, because it has a date and a consequence and does not respond to being remembered vaguely.
Keep the reference numbers together: clinic, prescription, pharmacy. You will be asked for them repeatedly by people who cannot see each other's systems.
And expect to repeat your own history to several different professionals. Written down once, it stops being a thing you have to reconstruct while sitting in front of somebody.
The backlog does not clear itself
Diagnosis explains the pile. It does not remove it, and there is often a period of disappointment when that becomes clear.
What tends to change is the approach: less trying harder, more building around the difficulty. The starting point for the things that have sat longest is in when something has been left so long it is embarrassing.