The condition you might be referring to is called "grandiose delusions" or "delusions of grandeur." It is a symptom that can occur in various psychiatric disorders, including:
Narcissistic Personality Disorder (NPD): Individuals with NPD often exhibit grandiose delusions, where they have an inflated sense of their own importance, believe they are unique and superior, and expect excessive admiration from others.
Bipolar Disorder: During manic episodes of bipolar disorder, a person may experience grandiose delusions, feeling invincible, believing they have special powers, or possessing exceptional talents.
Schizophrenia: Grandiose delusions can also occur in schizophrenia, where a person may believe they are a famous or powerful figure, have a special mission, or possess extraordinary abilities.
Delusional Disorder: This is a standalone mental disorder where individuals experience persistent, non-bizarre delusions without other major psychiatric symptoms. Grandiose delusions are one of the subtypes of this disorder.
It's important to note that while grandiose delusions can be a characteristic of these disorders, not everyone with these conditions will exhibit this symptom. If you or someone you know is experiencing such symptoms, it's crucial to seek professional help from a mental health professional for proper evaluation and treatment.