As I said in a response to another thread (though I've edited this a bit to add more context):
Being autistic has been extremely difficult for me over the past two years or so. The COVID lockdown stressed me out and made a lot of my autistic traits more pronounced, especially the disabling or weird ones.
I have a lot of "savant skills," though I don't usually call them that. For example, I can, or used to be able to, teach myself languages within months. I have a photographic memory for things like spelling and grammar. I can read books and websites while holding conversations. Despite having done abysmally in math in high school, I managed to teach myself the basics of calculus within a few months. I taught myself how to read several years before I started school—this is known as "hyperlexia."
I have intense synaesthesia, which means that I associate colours with sounds, symbols with a variety of sensory stimuli, and some letters with colours. Thanks to my synaesthesia, I react strongly to sensory stimuli, including words and symbols, and very few people understand that. If I see something written wrongly or in a nontraditional way, I'll start feeling aversions. I won't list out the things that set me off, because they're ridiculous and I don't want anyone making fun of me for it.
My long, detailed memory isn't limited to spelling and grammar. I remember details about other people's actions—often for decades—that most people forget. I remember their typing quirks, what they wore, the way they talked, the way they moved, when I know none of them would remember me with that level of detail, if at all. It makes me feel like a circus freak. People have sometimes noticed my memory and said things like "get a life," as though I deliberately intended to remember all those details. It's just the way my brain fucking works.
My brain latches onto inconsequential topics and loops on them over and over again, and I know damn well that I've annoyed the shit out of people with my highly specific and arcane special interests that I couldn't stop talking about. (Notably, none of my autistic friends attacked me for doing that.)
I've become more brittle and less tolerant of aversive stimuli, noise, crowds, and other inputs than I was three years ago. I've had meltdowns when I encounter something aversive or offensive, including at work and around my friends. All those people were bewildered at how I was acting, since I was known for being calm and rational before I started regressing. I managed to step backward about 24 years in the course of two years (I'm in my mid-to-late 30s).
I don't make much sense to most neurotypicals, and that truth is crushing for me. I have a lot of reasons for wanting to kill myself, and this is one of them. As I said before, I feel like a fucking monster and a freak. It's often torturous to go through the day with so many aversions and sensory sensitivities.