adult onset?

It *can* - especially if something has happened to change brain wiring (trauma, stroke, drugs/meds) - and it can also reveal itself if a new challenge presents itself.

I don’t believe that LD just pops up out of nowhere in adulthood, however, I do believe that LD manifests itself in different ways during different stages of life, as new challenges present themselves. It’s possible that you had learned to deal with the manifestation of your LD during a previous stage of your life to the point that you didn’t notice it, or you had such good support that it just never became an issue.
This of course, is just my opinion, not to be taken too seriously. I’m no scientist (to make the understatement of the century) and I have no knowledge on the biological components of LD, and I have very little understanding of the biological reason why the brain behaves the way it does in any given situation. In any case, what really matters is the fact that these things are an issue for you now, and for that reason, you should look into it, so you can be provided the resources you need to function at your optimum.
Now — here’s hoping this actually sends! I posted something a couple of weeks ago, whichvanished into thin air, and I’ve been o busy and exhausted to repost it. Anyway, I think I’ll just click on “submit” and see what happens….
Good luck with everything.

Every time I read that I see
“…don’t believe that LD just poops up out of nowhere” - somehow it fits…

I agree with what everyone else said: “LD doesn’t poop out of nowhere”. I’ve only got diagnosed with NLD at 20 when I went for a neuropsych at my own initiative. Yet, I had always had the very same problems before: I just did not know that they fall under the LD category. I’ve put excruciating effort into everything throughout school, homework took me from the time I came home from school and until bedtime, even longer. I’ve just thought that that’s the way I am and that things come harder to some than to others. I didn’t know that if something is consistently difficult in school, it’s LD.

So if some tasks have always been consistently difficult for you, it’s LD. Basically, if your brain intrinsically has a problem with a cognitive task, it’s LD. Are your problems trully completely sudden? If the latter is true and you had no brain injury, or a physical disease, and aren’t taking prescription medications, then probably not. But most people do consistently have problems with something even if they don’t consciously recognize it as LD.

I dont think that it just happens. I have been told that you tend to notice it more in ele. school and it is not as noticeable as you get older. i think that is true, i have one and it was really bad in ele. it is stell bad sometimes but i have learned how to handle it over the years