Feeling Overwhelmed and Triggered

I don't know if this is what you're talking about or not but I get sensory overload quite easily these days due to my illness. If things are too loud or too bright or if too many things are happening at once I get extremely overwhelmed, panicked, and irritable. I start exhibiting pre migraine symptoms and get a bit blurry like you were saying. I bring it up because you mentioned the beginning to comprehend its all real thing. That's how I feel when I experience sensory overload, its like everything is in extra sharp Technicolor 3D with a bumped up stereo system for the first time and I'm being flung through a tunnel full of it