tiredemma - I would accept with great honour, in a virtual MN way
Seriously, I think that if you struggle to articulate you need to bring it all down.
I think your plan of action should start with:
- Ignore the fact that it is a dissertation, and do a big brainstorm/spider diagram of everything you associate with PTSD/ PND/ Traumatic Childbirth.
You might find it better to do 3 separate diagrams. Then you can look at each of them, and see where the similarities lie.
So, off top of my head,
PTSD - Trauma, or perceived trauma, unexpected outcome, ongoing inability to function fully in life. Anxiety, etc.
PND - ongoing inability to function fully in life, Inability to enjoy parenting freely, anxiety, etc.
Traumatic Childbirth - Trauma, or perceived trauma, ?unexpected outcome, inability to 'move on, etc.
Then, you would look at the three, and pick out the similar ones, and that gives you an idea of why they might be confused, for example.
In medical terms it is known as a 'differential diagnosis'.
Fairlady brings in another point that can be missed, in that given the same circumstances, a different attitude from the 'gatekeepers' of communication and care, power, can be the difference between a positive and negative experience.