At the time, her claims were thought to be signs of mental illness, and only after the Watergate scandal broke was she proved right (and hence sane). Similar factors have led to criticisms of Jaspers definition of true delusions as being ultimately un-understandable. Critics (such as R. D. Laing) have argued that this leads to the diagnosis of delusions being based on the subjective understanding of a particular psychiatrist, who may not have access to all the information that might make a belief otherwise interpretable. Another difficulty with the diagnosis of delusions is that almost all of these features can be found in "normal" beliefs. Many religious beliefs hold exactly the same features, yet are not universally considered delusional. For instance, if a person was holding a true belief then they will of course persist with it. This can cause the disorder to be misdiagnosed by psychiatrists. These factors have led the psychiatrist Anthony David to write that "there is no acceptable (rather than accepted) definition of a delusion." In popular culture
In the 2010 psychological thriller Shutter Island, directed by Martin Scorsese and starring Leonardo DiCaprio, delusional disorder is portrayed along with other disorders. An Indian movie Anantaram (Thereafter) directed by Adoor Gopalakrishnan also portrays the complex nature of delusions. The plot of the French movie He Loves Me... He Loves Me Not revolves around a case of erotomania, as does the plot of the Ian McEwan novel, Enduring Love. See also
Delusional parasitosis
Monothematic delusions
Morgellons
Paranoia
Shared delusional disorder

References
Further reading
Arnold, K.; Vakhrusheva, J. (2015).
The combination of pharmacotherapy with cognitive therapy integrates treating the possible underlying biological problems and decreasing the symptoms with psychotherapy as well. Psychotherapy has been said to be the most useful form of treatment because of the trust formed in a patient and therapist relationship.Supportive therapy has also been shown to be helpful. Its goal is to facilitate treatment adherence and provide education about the illness and its treatment. Furthermore, providing social skills training has been found to be helpful for many people. It can promote interpersonal competence as well as confidence and comfort when interacting with those individuals perceived as a threat.Insight-oriented therapy is rarely indicated or contraindicated; yet there are reports of successful treatment. Its goals are to develop therapeutic alliance, containment of projected feelings of hatred, powerlessness, and badness; measured interpretation as well as the development of a sense of creative doubt in the internal perception of the world. The latter requires empathy with the patients defensive position. Epidemiology
Delusional disorders are uncommon in psychiatric practice, though this may be an underestimation due to the fact that those with the condition lack insight and thus avoid psychiatric assessment. The prevalence of this condition stands at about 24 to 30 cases per 100,000 people while 0.7 to 3.0 new cases per 100,000 people are reported every year. Delusional disorder accounts for 1–2% of admissions to inpatient mental health facilities.