I call mine overeager and incompetent. It likes to attack everything but what it is supposed to attack. The running tally of autoimmune diseases is currently at 4. It is bad enough that I am eating medication that is used also in higher doses for chemotherapy. In other words, if I trusted my immune system I would have died long ago as it also doesn’t really function against infections either.
One of mine is also lupus. Thankfully it has mostly spared internal organs but it really likes skin and veins in addition to joints in my case, veins being the biggest problem. I also have EDS so the genetic lottery really didn’t like me. I joke with my friends that someone should tell my body that diseases are not Pokemons.