I had the diagnosis NPD (and more) since 15 years. After getting diagnosed with Aspergers and ADD stuff got deleted, like schizoid personality disorder, because what looked like that was really part of Aspergers. For some mysterious reason, NPD stuck around and every doctor I asked to remove it told me they were just hired for a short time and had to know me better to do so. So it lingered. This time I had more luck though. The doctor sort of sighed and said "If it makes you any happier...." and it should be gone from my records now. :)