Is there a physical component of narcissism?

Not necessarily: There are no typical physical symptoms of narcissism that i know of. But, narcissistic vulnerability brings with it extreme sensitivity to how one's body appears to others. As they age, narcissistic people feel great distress about appearance because it conflicts with their self-view of superiority. They are very envious of others, especially those whom they view as more beautiful, thin, etc.

Narcissism: The hallmark of a narcissist is an immense ego, grandiosity, and self-importance, as well as being entitled, and a tendency to use and objectify others as well as thinking of people in all-good or all-bad terms instead of shades of gray. The core of a narcissist is profound insecurity. There are no physical abnormalities with narcissism, only psychological ones.