How do psychologists classify personality disorders? Psychologists classify personality disorders based on patterns of maladaptive thoughts, emotions, and behaviors that affect daily functioning. The DSM-5 (Diagnostic and Statistical Manual of Mental Disorders, 5th Edition) categorizes personality disorders into three clusters: Cluster A (Odd/Eccentric), including Paranoid, Schizoid, and Schizotypal Personality Disorders; Cluster B (Dramatic/Emotional), including Borderline, Narcissistic, Antisocial, and Histrionic Personality Disorders; and Cluster C (Anxious/Fearful), including Avoidant, Dependent, and Obsessive-Compulsive Personality Disorders. Diagnosis involves clinical interviews, self-report assessments, and behavioral observations to ensure accurate identification. For expert evaluation and treatment, consult Delhi Mind Clinic ('https://www.delhimindclinic.com/') or explore the Best Psychiatrists in Delhi ('https://www.bestpsychiatristsindelhi.com/') for professional guidance.