Personality disorders are enduring patterns of thinking, feeling and behaving that differ significantly from the expectations of an individual’s culture. These patterns are inflexible, begin generally in adolescence or early adulthood, and may cause difficulties in personal, social and occupational functioning. In counselling psychology, classification helps counsellors understand the characteristic patterns of behaviour and plan appropriate interventions. Personality disorders are commonly classified into three clusters: Cluster A – Odd or Eccentric Personality Disorders 1. Paranoid Personality Disorder: It is characterised by persistent distrust and suspicion of others. The person may interpret harmless actions as threatening or hostile and may be excessively sensitive to criticism. 2. Schizoid Personality Disorder: Individuals show detachment from social relationships and have a limited range of emotional expression. They generally prefer solitary activities