I know that other mental disorders cause mood swings but the “swings” in things like bipolar are much more long-lasting. I’m asking this question because a lot of people believe mood swings are normal, especially in teens. When I was 13-14 (and my BPD traits started developing), it was passed off as a normal teen thing. My self harm was never really seen as a “mental health issue” either, which I find ridiculous. I know there’s a lot of people who will have a slight mood fluctuation when something goes wrong and say “im so bipolar 🤪” (god I hate when people say that), but for people with BPD it’s not just a minor thing: everything will be perfectly normal and then suddenly we are experiencing every negative emotion under the sun. I’m sure there are illnesses that are similar but I feel like this is a classic BPD symptom.