I thought reverse dysphoria was a total meme. I'm cis and have never experienced gender dysphoria or a desire to be a woman and I tried HRT for a bit after this board memed me into it. Nothing unusual at first but after about a month it started to make me feel weird and disassociated and I had a kind of abstract crawling-in-my-skin this-is-wrong feeling. I stopped and felt fine again within about a week.
I kind of wish I were trans so that this wouldn't be the case, but oh well. I'm transtrans, and there's no medical remedy for being transtrans.