Paranoid personality disorder is a mental health condition in which a person has a long-term pattern of distrust and suspicion of others, but does not have a full-blown psychotic disorder such as schizophrenia. A lot of times this disorder can get misdiagnosed as schizophrenia, borderline personality disorder, antisocial personality disorder and delusional disorder. But the most commom is schizonphrenia.
Paranoid personality disorder is listed in DSM-III-R and was also included in all the previous versions of the DSM. One of the earliest descriptions of this disorder come from a French psychiatrist named Magnan who described it as “a fragile personality that showed idiosyncratic thinking, hypochondria, undue sensitivity, referential thinking and suspiciousness.” Another description that is closely related to this description is Kraepelin's description from 1905 of a pseudo-querulous personality who is "always on the alert to find grievance, but without delusions", vain, self-absorbed, sensitive, irritable, litigious, obstinate, and living at strife with the world. In 1921, he renamed the condition paranoid personality and described these individuals as distrustful, feeling unjustly treated and feeling subjected to hostility, interference and oppression. He also observed a contradiction in these personalities. Sometimes they stubbornly hold on to their unusual ideas, and then other times they often accept every piece of gossip as the truth. Kraepelin also noted that paranoid personalities were often present in individuals who later developed paranoid psychoses. Later on writers also considered traits like suspiciousness and hostility to predispose people to developing delusional illnesses, particularly late paraphrenias of old age.
Jaspers, a German phenomenologist, described "self-insecure" personalities who resemble the...