A story entitled, "It's All About Me: But is Narcissism A Disorder?" has been posted on NPR.org. The discussion about narcissism as a disorder within the realm of Secular Psychology reveals the severe limitation of Psychology as a discipline. Psychology is based on observation of fallen human beings in a corrupted world. There is no knowledge of what an unfallen, perfect person looks like. A "normal" person from a psychological perspective is still extremely spiritually, psychologically, and emotionally ill from a theological perspective. Orthodox theology possesses a vision of who we are intented to be and who we may become, and provides the therapy necessary to acheive good health deep within the soul. Self-love is at the root of our sickness. It is indeed a curable disease.
For more on the myth of Narcissus, check out the Wikipedia entry.