There are various ways that scientists and researchers understand the nature of addiction as addiction itself involves many interrelated factors and causes, making the disease much more complex and difficult to study at face value. The psychopathological model of addiction focuses on problems specific to mental disorders, such as cognitive difficulties, mood disorders, personality disorders, and other mental illnesses. This model attributes mental disorders as the main cause of the addiction.
It is usual for addiction problems to be linked to mental disorders, as studies show that half of the individuals who seek addiction treatment will also have a mental disorder. Addictive personalities for example, might be one of the underlying factors of addiction, as it leads to denial of obvious problems, and problems with impulse and emotional regulation. These are common traits found in individuals struggling with addiction, but more concrete evidence is needed in order to confirm that Personality Disorders are actually one the principle aspects of addiction. If someone is diagnosed with personality disorder, or addiction related to a mental disorder, then the recommended approach to treatment is psychotherapy, which would attempt to identify and resolve the underlying psychological problem/disorder, aiming to restructure the person’s personality and cognitive function.