IH8PN,
I don't spend much time in this thread, but this one caught my attention. Take a quick minute or two and have a roll through the pages of the link posted below.
I have PN from 22 years of drinking and I am still getting over it 928 sober days later. It is reversible in some cases and I am living testimony that it does.
http://neurotalk.psychcentral.com/thread104096.html
Good luck and keep up with the sobriety!!!