Hello, I've come to this thread via dontaskme's and haven't read it all. As I'm not currently affected by the issues myself, I'll try not to hang in too much. I was prompted to reply by this post:-
ThePinkPussycat Sat 18-Feb-12 02:08:27
NPD is merely a label for a cluster of behaviours and beliefs. One theory of PD is that following emotional trauma in childhood, sufferers become stuck at the age of the trauma, emotionally speaking, and I think there may be something in that. I don't believe it is thought to be due to differences in the brain, like AS, and is a result of nurture, not nature.
Actually there are measurable differences between PDs and 'non's in brain configuration AND activity patterns. Quite a few of these differences are similar to those noted in autists. It's unknown, yet, whether all PDs (or all cluster B disorders) show similar differences. Neuropsychology is a new discipline, and PET scans are still hideously expensive. Most of the existing work has been done on convicted psychopaths, though it's now being broadened out to BPD.
It has been theorised that 3 factors go into making a criminal psychopath: Brain shape; genetic marker; early trauma. A person with the brain shape and genes, who had a happy and secure childhood, will never be like everyone else but isn't motivated to inflict harm. If yous aw the documentary, you may have noticed that the specialist's wife said "He's a Jekyll and Hyde character" - she told the camera there's a whole side to him which is secret. The specialist, it turned out, has the gene and the brain but a lovely family.
In autism, too, there's a brain difference similar to the sociopathic one and a genetic component. I don't know if there's a linked gene. The brain difference, in both cases, causes social difficulties such as lack of empathy and language errors. There are also similar tendencies to hyper-sensing. In severe autism, lack of sensory filtering leads to an utterly painful battering by sensory input. Asperger's sufferers often have one over-developed sense - two Aspies I've known had better-than-perfect vision (his optician said "Like an eagle") and abnormally sensitive hearing, respectively. This is also found in sociopaths.
Please do note, I'm not theorising that ASDs and PDs are the same. I'm confirming they are both genetic in origin and can only be managed, not cured. They are both spectrum disorders and share some characteristics.
After trying to live with both at various stages in my life, all my life, I'm satisfied I'm more NT than not. And I will never again choose to have more of either in my life. The way my brain's constructed, I want effective two-way communication (of all kinds) with people: not an endless puzzle that can never be solved. I do think this is the main point for anyone trapped in an unbalanced relationship.
Naming a problem can help with decision-making, but it's not worth getting bogged down in the details! My (narc/aspie) mother said "When I was a girl, it was just different personality types, we didn't have all these names." She's got a point.