Yeah, I think alcoholism causes a lot of people who don't have NPD to behave in narcissistic ways. It's sort of like the difference between someone who is an abuser who is also an alcoholic, and someone who is an alcoholic who behaves in abusive ways (in the interest of protecting the addiction, as opposed to in the interest of controlling one's partner). They may LOOK the same, and may FEEL the same to the person on the receiving end, but the motivations and causes are different, and when the basic cause is alcoholism, it's more likely to disappear with continued sobriety.