• The disorder is best understood within the context of the broader category of personality disorders. A personality disorder is an enduring pattern of personal experience and behavior that deviates noticeably from the expectations of the individual's culture, is pervasive and inflexible, has an onset in adolescence or early adulthood, is stable over time, and leads to personal distress or impairment.

•  Arthur suffers from a severe personality disorder, since he mixes different personality traits, because he wants to get people's attention by all means.

• Arthur's mental health could be due to many causes. On the one hand, he might have a genetic mental disorder since his mother was also mentally ill. On the other hand, he might also have developed a psychological disorder as a result of his childhood trauma.

• Individuals with psychotic and externalizing behavioral disorders, particularly those who also abuse drugs and alcohol, tend to engage in higher levels of violence than individuals with other forms of mental illness.

• It may help to try to identify those most at risk, such as children who show signs of conduct disorder, and then offer early intervention.

• Individuals with psychotic and externalizing behavioral disorders, particularly those who also abuse drugs and alcohol, tend to engage in higher levels of violence than individuals with other forms of mental illness. 

I wish you would stop projecting your insecurities onto me—it's ruining our friendship!

Charlie had/threw a tantrum in the shop because I wouldn't buy him any sweets.