If at least one of the close family members used to suffer from schizophrenia or some other mental disorders, the chances to have troubles because of the paranoid personality disorder are also higher. Psychologists proved that a thin genetic link exists. Also, it is important to mind emotional traumas the kid used to go through. Besides, physical injuries or disorders could result in this problem as well.

Pay attention whether the person who might be having PPD is rather sensitive to setbacks. One should be careful if the individual gets too suspicious, isolated, and unforgiving. However, hostility is not the only feature you should note to be sure it is a paranoid personality disorder. Psychologists usually offer several questionnaires and tests to see whether the person has any problems from their field of specialization. Such exams are not always effective as the patient may try to hide real feelings and true answers. However, in most cases experienced health care providers are able to define this health condition.

Diagnostic criteria for research involves:
Proof that the way person acts, feels, behaves, and expresses emotions is significantly different from the norms and standards accepted in the civilized society.
A person should demonstrate deviation in his actions and behavior on the example of specific situations.
Proof that the deviation is long-lasting, does not improve, and certain attacks happen regularly.
No way to interpret the existing deviation as an outcome of common adolescents’ mental problems.
Presence of personal distress or negative influence on the community.
Presence of previous brain trauma/disease.

There are three things a specialist and family members should do to start and support the treatment of paranoid personality disorder. It is critical to teach the patient how to handle various negative situations associated with PPD. It is important to explain how to communicate with people and survive in society. Finally, one should help the patient to avoid attacks of paranoia or minimize them. Often, such people do not see or understand the problem, so it would be difficult to ensure them of the treatment’s necessity and possible adverse outcomes.