It’s a bit different for everyone
- For me it’s noise and light. I fucking hate summer people are outside everywhere the sun is blazing it’s so bright and noisy!!! - the very same for me, I need to give in and just buy sunglasses, the migraines aren’t worth it 
 
- Cluttered rooms. - I did not understand this about myself until after I married a person who is not comfortable until every surface is covered with stuff and every bit of wall perimeter is lined with piles of stuff. - same, my partner struggles to pick up after themselves and it gives me anxiety, 
 
- A noisy room full of people talking. - Yeah I get this one too. I can’t focus on any particular person, struggle to make out what someone sat next to me is saying, even if talking to me, and makes me very tired after a while. 
 
- Repeating sounds with the wrong periodicity. Some songs I cannot stand because the beat is a fraction too slow, making my brain go into “GET OVER WITH IT ALREADY” mode. It’s particularly grating with songs that have a “wwwWUB wwwWUB” thing that sounds like someone is turning the volume knob up and down. 
- A lot of things and it really depends on the day but something constant is repetitive noises while I am trying to sleep. When I was a kid someone snoring actually made me consider strangulation. I have slept in hotel bathtubs to escape it 
- Busy visuals. I don’t mind a lot of sound and light. But if there is too much going on it is overwhelming. It could be a tray of glass falling, or the way too intense colors of a candy store 
- motorbikes are the worst 
- Clear sunny days and equivalently lit environments. Anything brighter than cloudy is too bright, it’s like all of that brightness fills my bandwidth and I can’t think properly. - Ambient heat above 25°C is another one, that feeling of bulgy, sweaty, tight, sticky meat suit does not help my composure. It’s acceptable in some very specific contexts, but VERY specific. - Crowds get my heart pumping as well, too many people to track, variable overload. - On the flipside, I’ve seen some comments mentioning clutter as being another potential trigger, but I’ve always found visual noise to be soothing. My brain enjoys picking out the details as a background process, and the more varied/colourful, the better! I still have my limits, though, like I have no problem with messiness, like clothes thrown about the place and tools/resources left on random surfaces, but trash is trash. 
- Someone talking to me, lecturing me 
- For me it’s stress or anxiety. Things I can normally handle (like some background noise for example) just make my brain not work when I’m stressed or anxious 








