Phantom horns origin story
There's no exciting point to this post, I'm just recording this for my own sake.
I first really became aware of my feeling of having horns when I was around seven or eight years old. I think it must have been some sort of stress-response. Or, rather, my way of understanding my own stress-response.
When I became angry, seething without a word like a disgruntled eight year old easily can, I (involuntarily) 'visualized' horns coming out of my head. I could feel their weight, and the odd pseudo-pressure of their protrusion from my skull. I remember the first time I truly became aware: sitting in the principal's office, being told off for (truly accidentally) hurting another kid. I felt like I wasn't being listened to, and as my frustration arose, so did the supernatural sensation of two heavy, bonelike horns erupting from my head. It didn't hurt despite the strange newness, it felt natural.
Realistically, this was probably actually just a sort of pressure in the front of my head from feeling stressed, but interpreted through a sort of fantastical lens. 'Ah, I'm so angry, it's almost demonic! and that feeling at the front of my head, heavy, as if I'm growing horns!' Something like that. But whatever the true cause, it quickly became a mainstay of the mental schematic of my selfness.
When feelings of anger arose, I felt the base of the horns form on my forehead, and I worked to calm myself down to keep them from growing, worried about the purity of my soul. It wasn't the best mechanism of course, but I was an elementary schooler and doing the best I could.
Now, they still frequently appear, though less often as a symptom of displeasure. My horns aren't signifiers of unwelcome anger now. They're just... part of me, I guess.