I agree with the previous posters-
any kind of stress, and most people revert to a "base" state of being that's most natural for them.
I had a heated conversation with a friend earlier today, for more than an hour, and I'm quite positive I didn't look him in the eye once.
I've been feeling more emotional of late, and have noticed I'm even more sensitive than usual to overhead lighting.
Not to say Aspie-ness doesn't fluctuate seemingly out of nowhere, but I can't imagine that maintaining proper sleep hygiene, a good diet, and low stress levels wouldn't help.
_________________
"Such is the Frailty
of the human Heart, that very few Men, who have no Property, have any Judgment of their own.
They talk and vote as they are directed by Some Man of Property, who has attached their Minds
to his Interest."