I have looked at the Wikipedia article for NPD and my W ticks all of the boxes. She also ticks a lot for borderline personality disorder as well. She has had two nose-jobs done since I met her, even though I told her she did not need to get them done - it wouldn't make me love her more.
I have not brought up the psychological help thing with her - in light of recent things she has said it would probably be fruitless.
Me: 46 W: 46 T: 23 M: 20 DS12 DD11 DS5
W left: 01/28/08 Discovered OM: 02/26/08 W back for 9 days: 04/08 W returned 05/21/08 EA/PA - 01/08-07/09 W's MLC 2008-2014 (realised this much later)