If you have slight ASD but not so much that it becomes a problem, then have something happening, sure your ASD could get worse and more noticeable. It's sort of like after I went through a really bad depression my ADD traits became much more severe, even after the depression was better. I always had ADD but it got worse after that stressful time.

But also I notice ASD and PTSD might have some things in common. I think stimuli and information is treated differently by the brain after PTSD happens. I have ASD and it still surprises me how many people with PTSD seem to think like me.