My husband and I are currently in marriage counselling. One of the most significant problems I see in our marriage is my mother-in-law's effect on my husband. Her most recent stunt came after the birth of our first child. When she was planning her visit to us and our one-week-old son, she became HIGHLY offended when we asked her to stay in a hotel (our house is very small, we were all exhausted, and I was trying to learn how to breastfeed). Her way of handling her anger was to move from California (near us) to Texas without leaving a forwarding adress or telephone number. Naturally, my husband was devestated and became extremely depressed (he suffers periodic -- possibly cyclical -- bouts of depression, anyway, but this was much worse) and began taking his anger out on me (verbally, not physically). After describing this incident along with a litany of others to our psychiatrist, she suspected my mother-in-law suffers from BPD. Both my husband and his mother fit some (but not all) of the BPD descriptions as posted on your website. My question is this: what is the likelyhood of his sharing this disorder with his mother, and what is the likelyhood (do you have specific statistical studies?) that he would be able to overcome it (I am hopeful, as he is willing to go to counselling with me and has agreed to take Wellbutrin for his depression, but less hopeful in that he persists in blaming his chronic depression solely on transient stresses like work, money, etc. and does not acknowledge his mother's lifelong contribution)? I am uncomfortable asking our counselor about this in front of my husband as he becomes angry and defensive if he thinks I'm suggesting he's "sick in the head."