In reply to Mountain Lass:
Mountain Lass,
I merely uses the normal distribution in passing, to attempt to explain what is meant by "normal", which is subjective especially in the art of psychiatry. I realise more than most that this is a redundant way of diagnosing mental illness, but it is a rough guide, as I mentioned above. People do have variations of mood, that is part of life, depression is when these variations are more pronounced than usual or there is dullness of affect so that people are in a perpetual low mood.
I have read quite widely the aetiology of self harm. Admitedly, its not my specialist area and is not ever likely to be, however, having met many people professionally who have commit DSH or parasuicide I would agree with you that there are definately genuine cases where there pain, either physically or emotionally, becomes too much for that individual to bear with and they use DSH as a way of either;
1. Escaping from this pain by giving them an alternative to worry about.
2. As a matter of attention seeking so that others realise the pain/anguish they are going through.
Of course, in the first instance, I wouldn't label this as being selfish etc as some people have suggested of suicide above. In the second instance, this is slightly selfish, as there are always people to talk to, if not in the immediate family or friends, then professionals such as Doctors, self-help groups etc.
I hope this clears a few things up. I don't mean to cause offence.
Regards