Does it get worse when he is standing or walking, or get any better when he lays down for a while?

I deal with the same sensitivity. the only thing that really works for me is absolute darkness

I ask because trazodone can cause dysautonomia (many have worse symptoms upright). The symptoms fit whether or not he prefers one way, so I would definitely ask the drs about it!

I had these exact symptoms and they turned out to be panic attacks. The enhanced vision/hearing, and almost passing out but it never actually happened, were symptoms I found concerning when I had them. This is the first time I’ve heard of someone having the enhances senses besides me, which is interesting. They don’t seem to be common occurrences. Went to the ER a couple times because of it (felt like I was dying, would come on in waves out of nowhere), did every test possible, found nothing wrong. It was so angering having people suggest it was a “bug” when I knew it was definitely something else. Not saying they are that, it could be a separate physical issue, but if nothing can be found, they may be panic attacks. Different from anxiety attacks.

When I was taking it it was enhancing my anxiety, which may or may not be the problem. If they find nothing physically wrong you might want to consider changing medications. I know it sucks but it'll probably be better in the long run.