Hello WIIAM...I too have been on Prazosin (Pra-zo-sin). I am a vet (USAF,female) and the VA has started using this. I had to "in-hospital" because it was originally intended as a blood pressure med and I already have pretty low BP. In using it for BP, they noticed a major decrease in nightmares, something many vets suffer from. I was started on 1mg. and it was gradually increased to 5mg. I have been told it is safe to go to 20mg., but because I have low BP already, 5mg. is really pushing it.
Give thought to the possibility of going on this WHILE you do therapy. Then you will get better rest (always a plus in dealing with mental health), and you will not fear sleeping. I do have difficulty for a while in the AM until my BP rises a bit, but the better sleep is worth it.
Hope this helps and gives you hope.