Which cluster of personality disorders is characterized by odd or eccentric behavior?

Cluster A personality disorders are characterized by odd or eccentric behaviors and include disorders such as paranoid personality disorder, schizoid personality disorder, and schizotypal personality disorder. Individuals with these disorders may display peculiar or bizarre behaviors, have social anxieties, or show a detachment from social relationships.

The classification into Cluster A is rooted in the DSM-5 (Diagnostic and Statistical Manual of Mental Disorders, Fifth Edition), where the oddity of thought processes and behaviors sets this cluster apart from Clusters B and C. While Cluster B includes dramatic, emotional, or erratic behaviors, and Cluster C is characterized by anxious or fearful behaviors, it is the uniqueness of the presentations in Cluster A that distinctly aligns with the description in the question. This highlights the importance of understanding the characteristics of each cluster in terms of their behavioral manifestations and social interactions, providing clarity on their classifications within personality disorders.