G'morning!
I am a student going into psychology, and I find I am struggling a bit with understanding PDs. I hope it's not an issue for me to be asking this; I have C-PTSD which has similar symptoms but nothing else (only doing research!) My question is lined in the title; is the idealization and devaluation of someone a requirement, or is it simply a symptom on the list? From what little I have observed in peers I have known, this seems so common that it seems like it's mandatory in the disorder. However, I have heard of information contradicting this-- and I figured I would reach out to the community. 

What are your experiences? Are you a BPD who does not "split"-- or if you do, is it different from other people with this disorder? Is it less intense? etc. I appreciate any and all inputs on this! Thank you, and I hope everyone has a nice day!