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Psychiatria Polska Dec 2022The diagnostic criteria for schizophrenia and the diagnostic criteria for personality disorders refer to the same dimensions of mental functioning, except for the... (Review)
Review
The diagnostic criteria for schizophrenia and the diagnostic criteria for personality disorders refer to the same dimensions of mental functioning, except for the presence of typical psychotic symptoms in schizophrenia (hallucinations, delusions and catatonic behaviours). Since schizophrenia is a psychosis with a predominantly chronic course, with exacerbations and steady course periods, a simultaneous diagnosis of personality disorders, which are also "permanent" in nature, and a significant part of which affect the same areas of mental functioning, in the same patient is at least controversial. Although therapeutic interventions in patients with schizophrenia are mainly based on pharmacotherapy, psychotherapy and work with the patient's family are also important. Since pharmacotherapy is virtually ineffective for personality disorders, psychotherapy is the main form of management. This however does not constitute a justification for a simultaneous use of these two diagnoses in the same patient.
Topics: Humans; Schizophrenia; Psychotic Disorders; Hallucinations; Personality Disorders; Comorbidity; Delusions
PubMed: 37098191
DOI: 10.12740/PP/144112 -
Schizophrenia Bulletin Mar 2023Large-scale epidemiological and genetic research have shown that psychotic experiences in the community are risk factors for adverse physical and psychiatric outcomes....
BACKGROUND AND HYPOTHESIS
Large-scale epidemiological and genetic research have shown that psychotic experiences in the community are risk factors for adverse physical and psychiatric outcomes. We investigated the associations of six types of specific psychotic experiences and negative symptoms assessed in mid-adolescence with well-established environmental and genetic risk factors for psychosis.
STUDY DESIGN
Fourteen polygenic risk scores (PRS) and nine geographical environmental variables from 3590 participants of the Twins Early Development Study (mean age 16) were associated with paranoia, hallucinations, cognitive disorganization, grandiosity, anhedonia, and negative symptoms scales. The predictors were modeled using LASSO regularization separately (Genetic and Environmental models) and jointly (GE model).
STUDY RESULTS
In joint GE models, we found significant genetic associations of negative symptoms with educational attainment PRS (β = -.07; 95% CI = -0.12 to -0.04); cognitive disorganization with neuroticism PRS (β = .05; 95% CI = 0.03-0.08); paranoia with MDD (β = .07; 95% CI = 0.04-0.1), BMI (β = .05; 95% CI = 0.02-0.08), and neuroticism PRS (β = .05; 95% CI = 0.02-0.08). From the environmental measures only family SES (β = -.07, 95% CI = -0.10 to -0.03) and regional education levels (β = -.06; 95% CI = -0.09 to -0.02) were associated with negative symptoms.
CONCLUSIONS
Our findings advance understanding of how genetic propensity for psychiatric, cognitive, and anthropometric traits, as well as environmental factors, together play a role in creating vulnerability for specific psychotic experiences and negative symptoms in mid-adolescence.
Topics: Adolescent; Humans; Genetic Predisposition to Disease; Psychotic Disorders; Hallucinations; Paranoid Disorders; Delusions
PubMed: 36287640
DOI: 10.1093/schbul/sbac149 -
World Journal of Clinical Cases Aug 2014Both pseudocyesis and delusional pregnancy are said to be rare syndromes, but are reported frequently in developing countries. A distinction has been made between the... (Review)
Review
Both pseudocyesis and delusional pregnancy are said to be rare syndromes, but are reported frequently in developing countries. A distinction has been made between the two syndromes, but the line of demarcation is blurred. The aim of this paper is to review recent cases of pseudocyesis/delusional pregnancy in order to learn more about biopsychosocial antecedents. The recent world literature (2000-2014) on this subject (women only) was reviewed, making no distinction between pseudocyesis and delusional pregnancy. Eighty case histories were found, most of them originating in developing countries. Fifty patients had been given a diagnosis of psychosis, although criteria for making the diagnosis were not always clear. The psychological antecedents included ambivalence about pregnancy, relationship issues, and loss. Very frequently, pseudocyesis/delusional pregnancy occurred when a married couple was infertile and living in a pronatalist society. The infertility was attributed to the woman, which resulted in her experiencing substantial distress and discrimination. When antipsychotic medication was used to treat psychotic symptoms in these women, it led to high prolactin levels and apparent manifestations of pregnancy, such as amenorrhea and galactorrhea, thus reinforcing a false conviction of pregnancy. Developing the erroneous belief that one is pregnant is an understandable process, making the delusion of pregnancy a useful template against which to study the evolution of other, less explicable delusions.
PubMed: 25133144
DOI: 10.12998/wjcc.v2.i8.328 -
Psychiatrike = Psychiatriki Sep 2021The prevalence of the biopsychosocial model in psychiatry highlights the importance of investigating the clinical significance of religiosity in patients with psychotic...
The prevalence of the biopsychosocial model in psychiatry highlights the importance of investigating the clinical significance of religiosity in patients with psychotic disorders. Due to the spiritual and supernatural nature of religious beliefs, distinguishing them from religious delusions is a challenging endeavour. The self-referential nature of the beliefs, the presence of concomitant psychiatric symptomatology and the effect on functionality seem to play a key role in differential diagnosis. Religious psychotic symptoms are common in clinical practice. The study of these symptoms often becomes difficult due to varying definitions, the fluctuation they present over time and space and the strong influences of the social and cultural environment on them. There seems to be a positive correlation between religiosity and the occurrence of religious delusions in psychotic patients, but it is not clear that this indicates a causal relationship. The content of religious delusions seems to be significantly influenced by the immediate social environment rather than cultural background of the individual, as well as by the beliefs and attitudes of the patient's family environment. Religious delusions are characterized by increased conviction and pervasiveness, permeating to a greater extent the individual's whole experience. Their presence is associated with more severe symptoms, higher medication dosage, and poorer prognosis. The increased severity of psychosis with religious content symptomatology seems to be associated with genetic factors and greater genetic load. In addition, the increased duration of untreated psychosis is a determinant of prognosis. This may reflect a reduced alertness of the immediate environment of patients who develop psychotic symptoms with religious content for the first time. Other important prognostic factors are patients' lack of adherence to treatment, their greater resistance to psychiatric approach of the disorder and their exclusion from religious communities, as well as the special characteristics of religious delusions, which seem more corrosive to the patients' psyche than other delusions. Religion and spirituality are prominent in the lives of the majority of patients with psychosis, but they are often underestimated in clinical practice. Raising the awareness of mental health professionals on issues of a religious and spiritual nature can be beneficial in both preventing and treating psychotic disorders.
Topics: Delusions; Humans; Psychotic Disorders; Religion; Religion and Psychology; Schizophrenic Psychology
PubMed: 33770751
DOI: 10.22365/jpsych.2021.014 -
Canadian Journal of Psychiatry. Revue... Feb 2015
Topics: Color; Delusions; Female; Humans; Middle Aged; Schizophrenia
PubMed: 25886659
DOI: 10.1177/070674371506000206 -
Biological Psychiatry. Cognitive... Nov 2022Persecutory delusions are among the most common delusions in schizophrenia and represent the extreme end of the paranoia continuum. Paranoia is accompanied by...
BACKGROUND
Persecutory delusions are among the most common delusions in schizophrenia and represent the extreme end of the paranoia continuum. Paranoia is accompanied by significant worry and distress. Identifying cognitive mechanisms underlying paranoia is critical for advancing treatment. We hypothesized that aberrant belief updating, which is related to paranoia in human and animal models, would also contribute to persecutory beliefs in individuals with schizophrenia.
METHODS
Belief updating was assessed in 42 participants with schizophrenia and 44 healthy control participants using a 3-option probabilistic reversal learning task. Hierarchical Gaussian Filter was used to estimate computational parameters of belief updating. Paranoia was measured using the Positive and Negative Syndrome Scale and the revised Green et al. Paranoid Thoughts Scale. Unusual thought content was measured with the Psychosis Symptom Rating Scale and the Peters et al. Delusions Inventory. Worry was measured using the Dunn Worry Questionnaire.
RESULTS
Paranoia was significantly associated with elevated win-switch rate and prior beliefs about volatility both in schizophrenia and across the whole sample. These relationships were specific to paranoia and did not extend to unusual thought content or measures of anxiety. We observed a significant indirect effect of paranoia on the relationship between prior beliefs about volatility and worry.
CONCLUSIONS
This work provides evidence that relationships between belief updating parameters and paranoia extend to schizophrenia, may be specific to persecutory beliefs, and contribute to theoretical models implicating worry in the maintenance of persecutory delusions.
Topics: Humans; Paranoid Disorders; Schizophrenia; Delusions; Anxiety; Surveys and Questionnaires
PubMed: 35430406
DOI: 10.1016/j.bpsc.2022.03.013 -
Psychiatria Danubina 2022
Topics: Antipsychotic Agents; Delusions; Humans; Parkinson Disease
PubMed: 35467618
DOI: 10.24869/psyd.2022.94 -
Revista de Neurologia Jan 2019Lethargic encephalitis is a neurological illness that shows a wide range of symptoms and signs, including neurological and psychiatric spectrum. It presented in an... (Review)
Review
Lethargic encephalitis is a neurological illness that shows a wide range of symptoms and signs, including neurological and psychiatric spectrum. It presented in an epidemic way, following influaenza relapses. The last relapse started at the beginning of 20th century and it was deeply described by Constantin von Economo. The illness described first in Europe and North America, was described in many others countries including Chile. There were beautiful descriptions by Chilean physicians like Lea-Plaza, Tello, Iturra and Cienfuegos. Their works showed the complexity of the illness like European physicians did too. The etiology is still unknown; however growing evidence about autoinmune aetiology is gaining force with the use of actual medical technology. In this work, we show encephalitis lethargica, focusing in clinical picture, the beauty of medical descriptions that physicians did at this date.
Topics: Academies and Institutes; Autoimmune Diseases of the Nervous System; Chile; Delusions; Disorders of Excessive Somnolence; Encephalitis; Epidemics; Europe; History, 18th Century; History, 19th Century; History, 20th Century; History, Ancient; Humans; Influenza, Human; Mental Disorders; Neurology; Parkinson Disease, Postencephalitic; Social Behavior Disorders; Symptom Assessment
PubMed: 30638258
DOI: No ID Found -
The Lancet. Psychiatry Oct 2022The content of grandiose delusions-inaccurate beliefs that one has special powers, wealth, mission, or identity-is likely to be highly meaningful. The meaning, for...
BACKGROUND
The content of grandiose delusions-inaccurate beliefs that one has special powers, wealth, mission, or identity-is likely to be highly meaningful. The meaning, for example providing a sense of purpose, could prove to be a key factor in the delusion taking hold. We aimed to empirically define and develop measures of the experience of meaning in grandiose delusions and the sources of this meaning, and to test whether severity of grandiosity in clinical and non-clinical populations is associated with level of meaning.
METHODS
We did a cross-sectional self-report questionnaire study in two cohorts: non-clinical participants aged 18 years and older, with UK or Irish nationality or residence; and patients with affective or non-affective psychosis diagnoses, aged 16 years and older, and accessing secondary care mental health services in 39 National Health Service providers in England and Wales. Participants with high grandiosity completed two large item pools: one assessing the experience of meaning in grandiose delusions (Grandiosity Meaning Measure [termed gram]) and one assessing the sources of meaning (Grandiosity Meaning Measure-Sources [termed grams]). The Grandiosity Meaning Measure and Grandiosity Meaning Measure-Sources were developed using exploratory factor analysis and confirmatory factor analysis. Structural equation modelling was used to test the associations of meaning with the severity of grandiosity. The primary outcome measure for grandiosity was the Specific Psychotic Experiences Questionnaire (grandiosity subscale) and associations were tested with the Grandiosity Meaning Measure and the Grandiosity Meaning Measure-Sources.
FINDINGS
From Aug 30, 2019, to Nov 21, 2020, 13 323 non-clinical participants were enrolled. 2821 (21%) were men and 10 134 (76%) were women, 11 974 (90%) were White, and the mean age was 39·5 years (SD 18·6 [range 18-93]). From March 22, 2021, to March 3, 2022, 798 patients with psychosis were enrolled. 475 (60%) were men and 313 (39%) were women, 614 (77%) were White, and the mean age was 43·4 years (SD 13·8 [range 16-81]). The experience of meaning in relation to grandiose delusions had three components: coherence, purpose, and significance. The sources of meaning had seven components: positive social perceptions, spirituality, overcoming adversity, confidence in self among others, greater good, supporting loved ones, and happiness. The measurement of meaning was invariant across clinical and non-clinical populations. In the clinical population, each person typically endorsed multiple meanings and sources of meaning for the grandiose delusion. Meaning in grandiose delusions was strongly associated with severity of grandiosity, explaining 53·5% of variance, and with grandiose delusion conviction explaining 27·4% of variance. Grandiosity was especially associated with sense of purpose, and grandiose delusion conviction with coherence. Similar findings were found for the non-clinical population.
INTERPRETATION
Meaning is inherently tied to grandiose delusions. This study provides a framework for research and clinical practice to understand the different types of meaning of grandiosity. The framework is likely to have clinical use in psychological therapy to help guide patients to find sources of equivalent meaning from other areas of their lives and thereby reduce the extent to which the grandiose delusion is needed.
FUNDING
Health Education England and National Institute for Health and Care Research.
Topics: Adult; Cohort Studies; Cross-Sectional Studies; Delusions; Female; Humans; Ireland; Male; Population Groups; Psychotic Disorders; State Medicine; United Kingdom
PubMed: 36049491
DOI: 10.1016/S2215-0366(22)00236-X -
Schizophrenia Bulletin Sep 2019Psychotic experiences may be understood as altered information processing due to aberrant neural computations. A prominent example of such neural computations is the... (Review)
Review
Psychotic experiences may be understood as altered information processing due to aberrant neural computations. A prominent example of such neural computations is the computation of prediction errors (PEs), which signal the difference between expected and experienced events. Among other areas showing PE coding, hippocampal-prefrontal-striatal neurocircuits play a prominent role in information processing. Dysregulation of dopaminergic signaling, often secondary to psychosocial stress, is thought to interfere with the processing of biologically important events (such as reward prediction errors) and result in the aberrant attribution of salience to irrelevant sensory stimuli and internal representations. Bayesian hierarchical predictive coding offers a promising framework for the identification of dysfunctional neurocomputational processes and the development of a mechanistic understanding of psychotic experience. According to this framework, mismatches between prior beliefs encoded at higher levels of the cortical hierarchy and lower-level (sensory) information can also be thought of as PEs, with important consequences for belief updating. Low levels of precision in the representation of prior beliefs relative to sensory data, as well as dysfunctional interactions between prior beliefs and sensory data in an ever-changing environment, have been suggested as a general mechanism underlying psychotic experiences. Translating the promise of the Bayesian hierarchical predictive coding into patient benefit will come from integrating this framework with existing knowledge of the etiology and pathophysiology of psychosis, especially regarding hippocampal-prefrontal-striatal network function and neural mechanisms of information processing and belief updating.
Topics: Bayes Theorem; Brain; Cognition; Cognitive Neuroscience; Corpus Striatum; Delusions; Dopamine; Hippocampus; Humans; Learning; Limbic Lobe; Models, Neurological; Models, Psychological; Neural Pathways; Neurophysiology; Prefrontal Cortex; Psychotic Disorders; Reinforcement, Psychology; Reward; Schizophrenia; Schizophrenic Psychology; Synaptic Transmission; Temporal Lobe
PubMed: 30388260
DOI: 10.1093/schbul/sby154