In psychology, that's called "mental illness".
Sorry, in psychology, identifying as a different gender from their biological sex is not mental illness. That's a fact. You don't know what you are talking about and should shut up immediately. While your iron aged rag might teach you how not to eat shellfuish and how to stone women for adultery, it teaches **** all about modern, clinical psychology.
Yes, it is mental illness. It's called "gender dysphoria". You're a first class idiot.
Sorry, not all cases are clinical gender dysmorphia, nor are all cases of gender dysphoria classified as illness. Seriosuly, you should shut your idiot mouth immediately, you have no idea what you are talking about. Literally every najor medical group on the planet -- from the WHO to the APA -- have declared that being transgender is not a mental illness.
Sorry shaman, the world has left you behind.