Somewhere PTSD and autism must overlap since sensory overload is common between the two. Unfortunately, those with autism don't get a break from the onslaught. With PTSD, it's mostly intolerable only when something in the environment triggers a flashback to something frightening heightening all senses.
She imagined bliss as a moment of purity when all is still and quiet on the earth. Italy was her first bliss with the poppies and no neighbors for miles around with only the calming sound of bees buzzing in the field with a view of serenity as far as the eye could see.