Your point about anxiety reminded me of the term "hysteria". It comes from the Greek word for uterus, because old timey psychologists were deeply misogynist. Despite a lot of non-sexist use during the years in which I grew up, it's now said very rarely, and I think the sexism is a component. It's gone the way I wish "narcissism" would go.

Speaking of origins, I'm reminded of the fact that Narcissus, the original narcissist, died because he was a narcissist. He couldn't drink a sip of water right in front of his face because he was so obsessed with his self-image. When your brain works so badly that you die, I call that a mental disability. Maybe all the people saying it's not a disability because it comes from Greek should learn more Greek.