Some of these people have no idea, and piddling about with definitions is totally beside the point.
Yes, I felt that when I read some of the comments.
I think partly it is so difficult to accept because they are often charming individuals to those outside of their own immediate family and others choose to judge those who 'break away'.
Absolutely. My mother knew exactly how to behave in company and only those in a more intimate relationship would see the side of her we saw as kids. Her behaviour was violent at times, highly critical all the time, love bombing at times but cold as ice and cruel when you stepped out of line, gas lighting to a huge degree and never, ever, ever wrong. Even when she did something nice it turned out that she wanted something in return and usually at far greater emotional cost than a reasonable person would give.
As you'll know, emotional dysregulation is where someone has difficulty regulating emotions, often feeling overwhelmed and finding it difficult to control their emotions. This is nothing like narcissism.
Borderline Personality Disorder is often referred to as Emotional Dysregulation. Whilst you may not mean to damage your children or other people around you, it can play a part. My daughter suffers from this and it can make her seem very manipulative. She has estranged me at the moment because I won't be manipulated by her behaviour which is very emotionally dysregulated currently. It is extremely tiring to deal with her when she is in this state but it doesn't stop me loving her or trying to do my best for her but even when she becomes calmer I know I will always be walking a tightrope with her. She's my daughter and it is very hard to accept that she may never be truly happy which is all I ever wanted for her.