Mental issues bring others. I have many minor issues in my life, including an obsessive-type personality disorder, which is basically a non-specific, mild form of OCD, and I believe all of them have been caused or nurtured by my being trans and the issues that come from that.
Once, when my depression and gender dysphoria hit a very bad point, I could not bear thinking of myself the way I was and how others viewed me, so much that I developed some sort of OCD-ish symptom. I was obsessively mixing around letters in all sorts of words and pronouncing (in my head) the result. It was so bad it made me withdraw from school. It progressively went away as I didn't have to deal with as many people as male anymore.
Though just to complain, having had that was really bad, because while it's nowhere near as bad, I still annoy myself by doing that, the letter mixing, once in a while. My brain didn't forget. :/