I always felt something was wrong with me but I had no idea what. Looking at endless wikipedia articles about mental illness and trying to figure out whats wrong didn't help. I only discovered than I had selective mutism throughout that. (like wow it has a name? people act like this besides me?)

I would hyperfocus into games and just play them 12 hours a day, typically had a hard time paying attention to movies or similar things, was very clingy to my partners, put as little effort into school as possible while still getting B grades, have a sensitivity to lights/sunlight & sensitivity to touch, would procrastinate any project to the last minute, had really bad task initiation ability.

I'm quite sensitive to noise (at my school they would force kids in the gym for a band/pep rally, i was the only one covering my ears). This has developed more into a talent now, in competitive shooters I generally don't miss any sound queue, like if someone accidentally makes a footstep from far away I know exactly where it is.

I have rejection sensitive dysphoria, I've only learned about this recently but its very common in people with ADHD. I would be deeply upset about rejection for long periods of time, I would even isolate myself because of the feelings. Maybe this partially contributed to my selective mutism that lasted throughout middleschool up until this last year.

The predominantly inattentive is quite underdiagnosed, more so in girls. Normal grades and no hyperactivity :/. I only realized that I had adhd when I took a 10mg adderall. I became calm for once, truly my anxiety was eliminated in a way that abusing xanax, painkillers, weed, alcohol, etc had never been able to accomplish. I could have a conversation without my mind completely going blank while the other person is speaking and then turning into a long awkward silence. Before then I thought that was just social anxiety.

ADHD manifests in many different ways, most are talkative unlike I was. It is a dopamine issue and people have a wide range of experiences/coping mechanisms.

A general practitioner can prescribe ADHD medications, might attempt that route if its cheaper/easier. I go to a psychiatrist that specializes in ADHD and there is no hassle, the GP is less likely to help.