People that suffer from this disorder are often suspicious of other people, and are unable to identify any negative feelings that they have toward others. The cause of the disorder is unknown but it is believed that it is more likely to occur in people that have a family member who suffers with schizophrenia.

The symptoms of Paranoid personality disorder

• Suspicion
• Concern with hidden motives
• Inability to relax
• Inability to collaborate
• Social isolation
• Poor self image
• Detachment
• Hostility
• Argumentative
• Poor sense of humour
• Unforgiving
• Easily slighted