How do multiple mental health conditions relate to each other?

I have BPD and schizophrenia and adhd and ednos and depression amd anxiety. Most of mine are trigger on how i feel or if im stressed like going to the doctors or something

having bpd and autism is like holding a lighter next to oil. they trigger each other often. if i get really angry or sad, i get sent into inconsolable episodes, which are followed by episodes where i can't talk because extreme mood swings exhaust me and trigger that part of my autism. sometimes when i can't follow my routines exactly how i like (autism) i get sent into fits of rage or crying that lasts anywhere from minutes to hours. it's tumultuous