Your take on this is interesting, I have Crohn’s disease so I’m always trying to learn as much about it and other autoimmune diseases as I can (I have zero background in medical science, everything I know is based off my pursuit of learning more). If I understand what you’re saying correctly, rather than say Lupus from your example just being “Lupus”, it should be more like diabetes where there is “Type 1” diabetes, “Type 2”, etc?
For myself, I know that my condition has a very strong physical component to it, but part of that is also influenced by psychological factors as well - when I’m more stressed, then my condition flares up even worse than it normally would for example (and is one reason I’ve been pushing heavily on trying to get things treated on the psychiatry side of things).
I don’t suppose there’s anywhere to read more up on what you’re referring to?