"I am the greatest!" a famous boxer declared loudly and often. Had he in fact acted throughout his adult life as though he were the greatest, the most appropriate diagnosis would be:

Question

Quizplus · Accepted Answer

The most appropriate diagnosis is narcissistic personality disorder, as the boxer's declaration of being the greatest and consistent self-promotion aligns with symptoms of narcissism, such as having an inflated sense of self-importance and a need for admiration. Histrionic personality disorder includes attention-seeking behavior and emotional instability, but does not necessarily involve a belief in being the greatest. Antisocial personality disorder involves disregard for others' rights and feelings, while impulse-control personality disorder is not a recognized diagnosis in the DSM-5.

"I Am the Greatest!" a Famous Boxer Declared Loudly and Often