Cluster A disorders are characterized by odd or eccentric patterns of thinking, such as extreme social detachment, distrust, or unusual beliefs. Paranoid personality disorder, which involves ...

Schizoid personality disorder is classified under the Diagnostic and Statistical Manual of Mental Disorders-5 as a Cluster A condition; it is described as odd and eccentric. The other two Cluster ...

and schizotypal personality disorders. These disorders are characterized by difficulty forming close personal relationships and odd or eccentric behavior. Schizoid and schizotypal have ...