Yes! I have 8 mental health diagnosises. For me, they are like guidelines, I can pull on which ever one serves me best at a particular time. I dont have every symptom every day, each diagnosis discribes a different part of me and they are each relevent at different times. Youre the expert on you, you get to decide which diagnosises you identify with, and what they mean to you. I hope your diagnosises help you get the care you need ❤️

Yes I've been diagnosed with severe anxiety and depression, bipolar, schizophrenic, paranoia, bpd, manic episodes linked with behavior, identity issues among peers and family, OCD (if that qualifies? I don't know) and multiple personality disorder

While it may be uncommon, it is totally possible! Don't let anyone invalidate your experiences by telling you otherwise

Yes; I have 9 that I know of

Yes, many mental illnesses are comorbidities. Also people having to navigate social/emotional settings with undiagnosed, untreated, or unacknowledged mental illnesses can exacerbate them, or if your condition(s) are used against you in a traumatic way or you otherwise find yourself in traumatic situations you can develop trauma related disorders either as an extension of how you're treated because of your mental health or independently.

I believe it is more common to have multiple mental diagnoses than it is uncommon.