I re-read this thread... i know that some abuse is more seriously threatening to a child's future personality than others, but in every "perfect" household you'll find something that psychologists will consider as "abuse". Excluding the blantantly illegal ones that require mandated reporting like murder, psychical abuse resulting in serious chronic injury, sexual assault/abuse of any kind... I think parents especially first time parents do what they know and can do, no one on the planet has/had perfect parents and there's no way to even describe what a "perfect" parent is. It's not like a recipe... you cannot just follow directions like caring for gold fish. Humans (kids) react differently and are simply born with different personalities.
I'm not sure that pointing to something a parent did or did not do (except in those obvious mandated to report cases) and focusing the therapy on that is useful. For everyone sitting in therapy for something, there are others who have gone through the same and maybe should be in therapy or are functioning and living smooth lives.
I'm not saying that circumstances (parental or life or other) aren't to "blame" for someone's way of coping but I find therapists focus too much on how or why it happened rather than helping them cope better or even change the way they cope and support them by helping them look at how they view the "issues" are affecting their current lives. 9 times out of 10, a therapist is digging for something or someone to blame, meanwhile its nice to know why but can they do something to help alleviate the pain or help the person build skills or change the ones the client feels is hindering their happiness...?
For things like eating disorders for example, there is a clearly unhealthy behaviour that can lead to medical issues and death. But the other ones described here, and I would add bereavement issues as well, are just pretty ordinary responses to life events. To what extent the issue is hindering their life and how to work around it or fix it should be the focus, not just simply making a list and labeling them and treating it like it will never change. That's setting up the client for failure because even the therapist is showing no hope that it will ever change. And Hope is far more powerful than any therapy or a pill can do for a human in distress/pain.
Sorry, maybe I'm ranting. But I really feel that this particular disorder and some others, the simple labeling of them as abnormal is wrong. It's totally normal for people to react in those ways in certain situations, and whether you like it or not, no parent is going to give the "ideal" or "perfect" (which can't even be qualified or quantified) amount of emotion attention, love, affection etc. People learn how to work around it through different means (friends, activities, therapy, meds). We are only hearing about the ones therapist report and diagnose, but if it was mandatory for every single person to have a therapist, everyone would have this disorder...!