Was he a narc? Or was it because of the drugs and alcohol?

This is where my confusion is, I don't know if he was really a narc, or if his words and actions were do to the fact that he was an alcohlic and abused drugs. I've been reading this site the last couple months, and I've seen alot of narcissist traits in him. And I just want to make sure before I tell my story.
Thank-you
mystified_62