An example of personality disorders that are similar to each other are disorders from the anxiety cluster, such as the overlapping symptoms of avoidant personality disorder and dependent personality disorder. Sometimes, it is hard to diagnose disorders when they are so similar because it is difficult to think of two disorders with such similar problems separately when they may in fact be variations of the same disorder.
People with different personalities can be given the same diagnosis because the DSM-IV says that “individuals must meet a certain number of criteria from DSM-IV to receive a given diagnosis” (Comer, 2005, p. 414) but it does not specify the features of a given diagnosis. This makes it difficult to give the right diagnosis to someone who may display symptoms of two closely related or overlapping disorders.
I definitely believe that personality disorders are true mental illnesses because I do not believe that people can go from being happy, hardworking, productive individuals in society, to people who are completely narcissistic and have no other further interests than staring at themselves all day in a