Psychotic symptoms in bipolar disorder and their impact on the illness:A systematic review

BACKGROUND Lifetime psychotic symptoms are present in over half of the patients with bipolar disorder(BD)and can have an adverse effect on its course,outcome,and treatment.However,despite a considerable amount of research,the impact of psychotic symptoms on BD remains unclear,and there are very few systematic reviews on the subject.AIM To examine the extent of psychotic symptoms in BD and their impact on several aspects of the illness.METHODS The Preferred Reporting Items for Systematic Reviews and Meta-analyses guidelines were followed.An electronic literature search of six English-language databases and a manual search was undertaken to identify published articles on psychotic symptoms in BD from January 1940 to December 2021.Combinations of the relevant Medical Subject Headings terms were used to search for these studies.Articles were selected after a screening phase,followed by a review of the full texts of the articles.Assessment of the methodological quality of the studies and the risk of bias was conducted using standard tools.RESULTS This systematic review included 339 studies of patients with BD.Lifetime psychosis was found in more than a half to two-thirds of the patients,while current psychosis was found in a little less than half of them.Delusions were more common than hallucinations in all phases of BD.About a third of the patients reported first-rank symptoms or mood-incongruent psychotic symptoms,particularly during manic episodes.Psychotic symptoms were more frequent in bipolar type I compared to bipolar type II disorder and in mania or mixed episodes compared to bipolar depression.Although psychotic symptoms were not more severe in BD,the severity of the illness in psychotic BD was consistently greater.Psychosis was usually associated with poor insight and a higher frequency of agitation,anxiety,and hostility but not with psychiatric comorbidity.Psychosis was consistently linked with increased rates and the duration of hospitalizations,switching among patients with depression,and poorer outcomes with mood-incongruent symptoms.In contrast,psychosis was less likely to be accompanied by a rapid-cycling course,longer illness duration,and heightened suicidal risk.There was no significant impact of psychosis on the other parameters of course and outcome.CONCLUSION Though psychotic symptoms are very common in BD,they are not always associated with an adverse impact on BD and its course and outcome.

Delusional parasitosis as premotor symptom of parkinson's disease:A case report

BACKGROUND Delusional parasitosis is characterized by a false belief of being infested with parasites,insects,or worms.This illness is observed in patients with Parkinson’s disease and is usually related to dopaminergic treatment.To our knowledge,no cases of delusional parasitosis have been reported as a premotor symptom or nonmotor symptom of Parkinson’s disease.CASE SUMMARY A 75-year-old woman presented with a complaint of itching that she ascribed to the presence of insects in her skin,and she had erythematous plaques on her trunk,arms,buttocks,and face.These symptoms started two months before the visit to the hospital.She took medication,including antipsychotics,with a diagnosis of delusional parasitosis,and the delusion improved after three months.A year later,antipsychotics were discontinued,and anxiety and depression were controlled with medication.However,she complained of bradykinesia,masked face,hand tremor,and mild rigidity,and we performed fluorinated N-3-fluoropropyl-2β-carbomethoxy-3β-(4-iodophenyl)nortropane positron emission tomography(PET),which showed mildly decreased DAT binding in the right anterior putamen and caudate nucleus.Parkinson’s disease was diagnosed on the basis of PET and clinical symptoms.CONCLUSION In conclusion,delusional parasitosis can be considered a non-motor sign of Parkinson’s disease along with depression,anxiety,and constipation.

Cerebrotendinous xanthomatosis presenting with schizophrenia-like disorder:A case report

BACKGROUND Cerebrotendinous xanthomatosis(CTX)is a rare autosomal recessive lipid-storage disorder caused by mutations in CYP27A1.Psychiatric manifestations in CTX are rare and nonspecific,and they often lead to considerable diagnostic and treatment delay.CASE SUMMARY A 33-year-old female patient admitted to the psychiatric ward for presentation of delusions,hallucinations,and behavioral disturbance is reported.The patient presented with cholestasis,cataract,Achilles tendon xanthoma,and cerebellar signs in adulthood and with intellectual disability and learning difficulties in childhood.After the characteristic CTX findings on imaging were obtained,a pathological examination of the Achilles tendon xanthoma was refined.Replacement therapy was then initiated after the diagnosis was clarified by genetic analysis.During hospitalization in the psychiatric ward,the nonspecific psychiatric manifestations of the patient posed difficulty in diagnosis.After the patient’s history of CTX was identified,the patient was diagnosed with organic schizophrenia-like disorder,and psychotic symptoms were controlled by replacement therapy combined with antipsychotic medication.CONCLUSION Psychiatrists should be aware of CTX,its psychiatric manifestations,and clinical features and avoid misdiagnosis of CTX for timely intervention.

Effects of age and sex on clinical high-risk for psychosis in the community

BACKGROUND Recent reports of both heightened prevalence rates and limited clinical relevance of clinical high-risk(CHR)criteria and their relevant symptoms in children and adolescents indicate an important role of neurodevelopment in the early detection of psychoses.Furthermore,sex effects in CHR symptoms have been reported,though studies were inconclusive.As sex also impacts on neurodevelopment,we expected that sex might have an additional contribution to age in the prevalence and clinical relevance of CHR symptoms and criteria.AIM To investigate age and sex effects on CHR criteria and symptoms and their association with psychosocial impairment and mental disorder.METHODS In this cross-sectional cohort study,n=29168-to 40-year-olds,randomly drawn from the population register of the Swiss canton Bern,were assessed in semistructured interviews by phone or face-to-face for CHR symptoms and criteria using the Structured Interview for Psychosis-Risk Syndromes and the Schizophrenia Proneness Instrument in its child and youth,and adult version,respectively.Furthermore,social and occupational functioning and DSM-IV axis I disorders were assessed.Simple and interaction effects of age and sex on CHR symptoms and criteria,and interaction effects of age,sex,and CHR symptoms and criteria on presentation of functional impairment and of non-psychotic disorder were investigated using logistic regression analyses.RESULTS Altogether,542(18.6%)participants reported any CHR symptom;of these,261(9.0%)participants reported any one of the 11 criteria relevant cognitive and perceptual basic symptoms,and 381(13.1%)any one of the five attenuated or transient psychotic symptoms(attenuated psychotic symptoms/brief intermittent psychotic symptoms).Fewer participants met any one of the CHR criteria(n=82,2.8%)or any one of the three recently recommended CHR criteria(n=38,1.3%).Both age and sex were significantly(P<0.05)associated with CHR symptoms and criteria,mostly by younger age and female sex.Though slightly differing between symptom groups,age thresholds were detected around the turn from adolescence to adulthood;they were highest for cognitive basic symptoms and CHR criteria.With the exception of the infrequent speech disorganization attenuated psychotic symptom,the interaction of age with CHR symptoms and criteria predicted functional impairment;whereas,independent of each other,sex and CHR symptoms mostly predicted mental disorders.CONCLUSION Age and sex differentially impact on CHR symptoms and criteria;these differences may support better understanding of causal pathways.Thus,future CHR studies should consider effects of sex and age.