Which personality disorder is associated with Othello syndrome?

Othello syndrome, also known as the "Othello delusion," is characterized by irrational jealousy and the belief that a partner is being unfaithful, even in the absence of any evidence to support such beliefs. This delusion often reflects significant paranoia and mistrust of others, which is a fundamental aspect of paranoid personality disorder. Individuals with this disorder are excessively suspicious and tend to interpret others' actions as malicious, which aligns with the symptoms observed in Othello syndrome.

The connection lies in the pervasive nature of distrust that defines paranoid personality disorder, making it the most relevant association with Othello syndrome, as it encapsulates the irrational jealousy and obsession with faithfulness that characterize this condition. Other personality disorders listed, while they have their own distinct features, do not primarily encompass the characteristics of ungrounded jealousy and paranoia to the same degree as paranoid personality disorder.