New level of Depression, any advice?

Over the past couple months my depression has turned me into a different person. I've always struggled with depression, but I always remedied the feelings by going out to concerts, or shows or just hanging out with friends. However now, I have lost all desire to hangout, talk, or even leave my apartment. My brain has convinced me that I don't care about anyone and have actually only associated with my "friends" because they make me feel good. Now that that's not the case anymore, I have no need or desire to associate. Am I just depressed? Or am I a full blown narcissist?