There can be some comorbidity / overlap, but they're different things.

ASD - typical presentation includes difficulty interpreting facial expressions / vocal tone / figurative speech, difficulty with theory of mind or modelling the experience of others, difficulty with social protocols or cues, inflexible, literal interpretation of rules, sensory issues, overload issues, single-subject fixation, spatial perception issues.

ADHD - typical presentation includes difficulty ignoring distractions, dificulty remaining focused on non-stimulating tasks, poor executive function, poor time management, poor task management, poor emotional regulation, forgetfulness, impulsivity, rejection-sensitive dysphoria, sensory/overload issues, fidgeting.

It's possible (and quite common) to have both; it's also quite possible to have the same behaviours for different reasons. For instance, ASD people may fidget/etc as stimming to manage sensory overload, whereas ADHD people may fidget out of excess energy. ASD people may act in socially-inappropriate ways because they don't understand (or care about) the relevant social cues; ADHD people may act in socially-inappropriate ways because they've been distracted out of the context and find it difficult to moderate their interaction. An ASD person might stay up all night reading about some topic because they're kind of obsessed with it; an ADHD person might stay up all night reading about it because hyperfocus kicked in and holy crap it's 8am where did the night go?

ASD people I've known have described it as their magic telepathy helmet being broken and trying to make sense of utterly irrational-seeming other people; I'm ADHD and would describe it as my mental whiteboard being broken and living in a soft rain of post-it notes with every random observation written on them, whether relevant or not.

Realistically, no-one here is qualified to give you an answer on whether you might have it or not.

That's something you might want to bring up to a psychologist or a doctor, although some ASD/ADHD organisations might have tests for whether you might have something worth checking out.

As a head-start, you might want to look into the RAAS-D, and the ASRS, which are qualified tests to gauge the possibility of you having either ADHD or ASD. You could bring them in to show your doctor, and go from there.

They are often interlinked and you can have both, many people do. The best thing to do is to get evaluated for it.

What I have been told by a psychiatrist (and don't completely agree with) is that unless you're trying to get medication to treat symptoms, it doesn't matter which one you have / get diagnosed with. The non-medication treatments are the same for both.

I'm sorry I don't have a more helpful answer. Sometimes things are more connected than we'd like, and we can't always separate them.

I've recently started taking medication to reduce the frequency of my migraines. I'm still not sure if it's done anything for the migraines, but it's had the side effect of making my ADHD symptoms more manageable. I really wasn't expecting that.

As someone who has recently started the diagnosis journey and who is yet to be actually diagnosed, reading things like this I'm curious (and a little anxious) about how a professional is likely to interpret my experiences.

For example, I have no problem interpreting facial expressions or gauging the mood of a group of people, but I do find myself getting hung up on explicit/literal interpretation of rules, I get fixated on a single subject, and I do get overloaded as soon as I walk into a situation with more than one activity to focus on.

However, I also have issues ignoring distractions, focusing on non-stimulating tasks, forgetfulness and fidgeting.

I'm curious what peoples' experiences are with symptoms that cross (I guess, for lack of a better phrase) "fields of diagnosis"?