Referring to oneself in the third person can be a symptom of identity
confusion or identity alteration, a subset or trait of dissociation. In
ancient times, it was referred to as demonic possession.
Self-objectification is also a trait of narcissism, perhaps because
narcissists love and feel empowered by (possession of) objects. And what
better object for a narcissist to love than themselves, objectified?
Other traits associated with narcissism are bragging, attention-seeking,
delusions of grandeur, etc. In modern times, I believe it is sometimes
referred to as being a bore.