Happens to me too; this Christmas I spent several days doing intense socialising, then finally on the afternoon of Christmas day, I suddenly found myself feeling hot, bothered and really angry with everyone for no reason at all. I removed myself for several hours and re-emerged slightly calmer, but it took a few days for the effects to wear off fully. I often don't notice how overwhelmed I'm getting until I've reached shut-down or borderline meltdown mode, then I notice very quickly that all is not well.
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"Survival is insufficient" - Seven of Nine
Diagnosed with ASD level 1 on the 10th of April, 2014
Rediagnosed with ASD level 2 on the 4th of May, 2019
Thanks to Olympiadis for my fantastic avatar!