Isn’t that a core symptom of autism that’s shared by pretty much every autistic person?

At the very least, being unable to regulate emotions when under stress. Often with the stress threshold and sources being meaningfully different from neurotypicals.

But I think a lot of people miss this distinction, both coming and going. If you can’t or haven’t identified your stressors, it can feel random. If you are always exposed to your stressors, it can feel perpetual.