Narcissistic personality disorder is a recognized (DSM-5) personality disorder. I agree that it can't and shouldn't be diagnosed by amateurs, though.
Me: 46 W: 44 Married: 17 Together 21 D13; S10 BD: 03.03.15 (Not attracted to you) Almost 2 years trying, alone, to save marriage Status now: Divorced (effective 06.13.17)