My ex-to-be dignosed me with Narcissistic Personality Disorder. I was pretty shaken by that because I grew up with her, basically since I was 20. She read a lot about it and decided that it was me. I went to 2 shrinks who disagreed with her, and took a 567 question test that said I do have some narcissistic tendencies, but not to the degree where it could be considered a disorder. Labels can be pretty scary. Shook my shit up, I'll tell you that.
As it turns out, she was just a dirty bitch. go figure.