I don't know if perception overload is a psychologically recognized situation, it's just a good description for what I experience.
It's when I have more than one person talking at me, or one person monologuing nothing but pointless details until I no longer know what they're talking about. It's when medium-loud music with background chatter (house party kind of thing) sends me to the bedroom to bring down the environmental stimuli. It's when looking around a room is like playing one of those computer games where you try to find hidden objects. I have extreme difficulty finding things out in the open. I could go on, but I'm not talking now to the uninitiated, am I?
I was only diagnosed adhd a couple years ago at age 56 and now I'm in the process of seeing what others are doing in other to make your way through the day. One thing I can't figure out is how to minimize this overload effect.