Do not know if this applies:

Grandiosity is chiefly associated with narcissistic personality disorder, but also commonly features in manic or hypomanic episodes of bipolar disorder.

It refers to an unrealistic sense of superiority, a sustained view of oneself as better than others that causes the narcissist to view others with disdain or as inferior. It also refers to a sense of uniqueness, the belief that few others have in common with oneself and that one can only be understood by a few or very special people.

Grandiosity is distinct from grandiose delusions, in that the sufferer has insight into his loss of touch with reality (he is aware that his behavior is considered unusual)

Grandiosity Gap Dysphoria

The narcissist's firmly, though counterfactually, perceives himself as omnipotent, omniscient, omnipresent, brilliant, accomplished, irresistible, immune, and invincible. Any data to the contrary is usually filtered, altered, or discarded altogether. Still, sometimes reality intrudes and creates a Grandiosity Gap. The narcissist is forced to face his mortality, limitations, ignorance, and relative inferiority. He sulks and sinks into an incapacitating but short-lived dysphoria.