Hi debm2,

I was hoping someone with a lot more knowledge would reply - but here is what ive worked out for myself and its pretty simplistic - and I could be wrong....

BPD is living in a false reality- putting a false version of you to the world and living that lie - and c-ptsd and ptsd is living with an event that happened that keeps re-occurring in flashbacks, nightmares etc -

dont know if that helped - there is a lot of info on the net but its confusing - suggest you ask his psych.

Take care P7