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Query: UMLS:C0036341 (schizophrenia)
 60,220 document(s) hit in 31,850,051 MEDLINE articles (0.00 seconds)

Twenty-three patients with one or more delusional misidentification syndromes were studied. The majority of the subjects were females and the Capgras syndrome was the most common delusional misidentification syndrome in our sample. The Capgras syndrome cases were significant older than the Fregoli syndrome cases. Schizophrenia and schizo-affective psychosis were significantly associated with Fregoli syndrome. Discriminant function analysis was carried out on the sample and showed that age and symptoms of nuclear schizophrenia were the variables most predictive of the type of delusional misidentification. These findings are discussed in the light of current literature.
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PMID:Delusional misidentification syndromes: a descriptive study. 886 50

The origins of schizophrenia are obscure. One suggestion is that it represents a component of the genetic variation associated with the establishment of dominance in one or other cerebral hemisphere, a mechanism that has been crucial in the evolution of language. Indices of cerebral hemispheric dominance (hand, foot and eye preference, speed of checking squares) recorded on the 16,980 children in the UK National Child Development Study cohort were examined in relation to psychiatric admission by the age of 28 years. Diagnoses were established by the application of Present State Examination criteria to case notes. Pre-schizophrenic children (n = 34-36) were more likely (p < 0.0003) to be rated by their mothers as ambidextrous at the age of 7 years, and at 11 years were less (p < 0.01) strongly right-handed than their peers in the cohort population on a test of relative hand skill: children who later developed affective psychosis (n = 25) or neurosis (n = 60) did not differ significantly from controls. Delay in establishing dominance in one hemisphere could be the critical factor that predisposes to schizophrenia.
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PMID:Cerebral lateralization is delayed in children who later develop schizophrenia. 900 Mar 15

The relationship between a history of substance use disorder and the early course of psychotic illness was examined in 96 subjects with schizophrenia and 106 subjects with affective psychosis followed in the Suffolk County Mental Health Project, a longitudinal study of first-admission psychosis. Subjects received a structured diagnostic interview and clinical ratings at baseline assessment and again 6 months later. The 6-month assessment included information about treatment received during the interval. A lifetime history of substance use disorder was associated with worse clinical functioning at 6 months for schizophrenia subjects, but not for those with affective psychosis. There were no significant associations of substance use disorder with type of treatment during the interval or with self-reported compliance with medication. Schizophrenia subjects were more likely than subjects with affective psychosis to report cannabis use during the interval and to meet criteria for cannabis use disorder.
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PMID:Substance use disorder and the early course of illness in schizophrenia and affective psychosis. 916 30

The rationale and design of a large, multicentre, prospective follow-up study on the outcome of severe mental disorders is presented. The study is currently under way in Italy, where psychiatric care has been uniquely characterised since 1978 by the statutory prohibition of admitting patients to psychiatric hospitals. The main purpose of the study is to describe the 5-year outcome of patients with a diagnosis of schizophrenia, paranoid disorder, affective psychosis, reactive psychosis or personality disorder with respect to five areas (clinical condition, personal autonomy, work, and family and social relationships); a secondary objective is to describe the heterogeneity of practices and resources of psychiatric services. The study is being carried out by 76 outpatient psychiatric services throughout the country, covering approximately one-tenth of the Italian population.
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PMID:Epidemiology of psychiatric care of patients with severe mental disorders in Italy. Rationale and design of a prospective study, and characteristics of the cohort. Italian Collaborative Study Group. 925 21

141 patients with schizoaffective psychosis were observed: 70 patients in the period of the first manifest attack and 71 ones 10-20 years after it (catamnestic group). It was found that juvenile schizoaffective psychosis is clinically heterogenous endogenous disease, presenting in a continuum of forms in the range from the ones close to affective psychosis to the forms closer to shift-like progredient schizophrenia. The course of the psychosis was determined by peculiarities of nonaffective delirious disorders in clinical picture of manifest attacks. 3 main variants of such attacks are recognized: with domination of delusion of imagination (the 1st type); with domination of a delusion of perception (the 2nd type); with domination of a delirium of perception combined with manifestations of acute interpretative delirium (the 3d type). The 1st and 2nd types of manifest attacks correspond to ICD-10 criteria of schizoaffective psychosis. The course and outcome of juvenile schizoaffective psychosis were less favourable than those of analogus psychosis in adult age.
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PMID:[Schizo-affective psychosis manifested in adolescence]. 979 18

Investigations of social support in schizophrenia have been relatively sparse. In this research, patients with 1st-episode schizophrenia or affective psychosis were asked to describe supportive social relationships immediately prior to their 1st lifetime treatment contact and were interviewed 18 months and 5 years later for assessment of their social and occupational functioning. The results indicated that 18-month adaptive functioning was lower than in the year prior to 1st treatment contact but at 5 years rose above that seen both at baseline and 18 months. Moreover, social support from nonfamily members of the social network predicted 5-year adaptive functioning in the schizophrenia (n = 54) group but not in the affective psychosis (n = 55) group. Support from family did not predict 5-year outcome in either group. Together, these findings replicate and extend earlier findings that social support predicts outcome in 1st-episode schizophrenia.
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PMID:Social support predicts 5-year outcome in first-episode schizophrenia. 983 Feb 56

Clinical practice, training and evaluation of treatment in the functional psychoses continues to be carried out mostly along the traditional line of separation by diagnostic entity. However, the combined evidence from research on risk factors for onset and for persistence of psychotic illness indicates quantitative, but not qualitative, differences between categories of schizophrenia and affective psychosis. "Developmental" factors, such as childhood dysfunction, increased cerebral ventricle size and familial morbid risk of schizophrenia operate preferentially, though not specifically, at that end of the psychopathological spectrum characterised by a preponderance of negative features. On the other hand, "social" factors, such as ethnic group, adverse life events and familial morbid risk of affective disorder have a larger impact at the end associated with predominance of affective features. Heterogeneity in the functional psychoses may thus be best conceived as two discrete effects operating at different ends of a continuous psychopathological spectrum. The use of highly reliable but arbitrary diagnostic categories may introduce serious bias in aetiological and treatment research. Evidence supporting the validity of a model of shared risk factors for continuous characteristics needs to be further elaborated and incorporated into our concepts of psychotic illness.
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PMID:Risk factors for onset and persistence of psychosis. 985 92

A pattern of negative symptoms associated with a high rate of ongoing brain and ventricular instability has been described in a cohort of schizophrenia spectrum probands (patients with schizophrenia, schizoaffective disorder depressed and bipolar, and psychosis NOS) (Garver, D.L., Nair, T.R., Christensen, J.D., Holcomb, J., Ramberg, J., Kingsbury, S., 1999. Differential patterns of premorbid functioning, symptoms and neuroleptic response in stable and unstable ventricular-volume schizophrenia. Neuropsychopharmacology 20, in press). The present study contrasts the prevalence of negative symptoms in first- and second-degree relatives of probands with unstable ventricle volume (UnsVV) and stable ventricle volume (SVV). One hundred and sixteen first- and second-degree relatives of 10 probands were interviewed using the SANS, the 'Characterization of Course: "Pattern of Symptoms"' [from Comprehensive Assessment of Symptoms and History (CASH)], SCID and SCID-II by interviewers blind to the status of the proband. Thirty-five of the 116 family members met DSM-IV criteria for schizophrenia, SA depressed, 'Cluster A' of the SCID-II (paranoid, schizotypal, schizoid personality disorder), psychosis NOS, or psychotic affective disorder. These 35 family members were defined as falling within a 'schizophrenia spectrum' as described by Farmer, A.E., McGuffin, P., Gottesman, I.I., 1987. Arch. Gen. Psychiatry 44, 634-641, but with the addition of DSM-IV affective psychosis. On that basis, the 35 members were considered 'affected family members' (AFMs). The remaining 81 family members were considered unaffected. The 'predominant symptoms of illness' (during the past 2-3 years) for 25 of the 35 AFMs could be characterized according to the 'Patterns of Symptoms' derived from the CASH. Twenty-five of the 35 AFMs were found to maintain a predominant symptom pattern during the course of illness, which could be characterized according to the 'Pattern of Symptoms' as 'predominantly positive' or 'predominantly negative'. Three of the probands had UnsVV; seven had SVV. Of the 35 AFMs, 11 were related to the UnsVV probands, and 24 were relatives of the SVV probands. The nine rated AFMs of the UnsVV probands showed a trend toward higher SANS scores (7.3 +/- 5.1) (mean +/- s.d.) than the 20 rated AFMs of SVV probands (4.3 +/- 5.1) (p = 0.08) at the time of the interview. Eighty-three per cent (eight of 10) of rated affected pedigree members of the pedigrees delineated by probands with UnsVV probands had a predominantly negative symptom course of illness, and 96% (23 of 24) of rated affected pedigree members of the pedigrees with SVV probands had a predominantly positive symptom course of illness during the preceding 2-3 years (p = 0.002). None of the 12 rated affected pedigree members within pedigrees having UnsVV probands were married at the time of the interview; 45% (14 of 31) of affected pedigree members having SVV probands were married (p = 0.004). A psychiatric disorder, characterized by unstable cerebral ventricles and predominant negative symptoms (including avoidance/failure of marital relationships) appears symptomatically to breed true in pedigrees containing schizophrenia-like illnesses.
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PMID:Negative symptoms of familial schizophrenia breed true in unstable (vs. stable) cerebral-ventricle pedigrees. 998 37

The question of whether schizophrenic-like disorders are neurodevelopmental or degenerative in origin has been argued since the time of Kraepelin. The authors provide evidence for the existence of two etiologically distinct endophenotypes of the psychoses contained within the rubric of familial non-affective psychosis (schizophrenia), one atrophic and the other neurodevelopmental. The atrophic psychosis, identified by progressive ventricular enlargement throughout adult illness, evidences progressive impairment of interests, relationships, and withdrawal from latency through adolescence, with emergence of trait-like negative symptoms which are only marginally responsive to conventional neuroleptics. This psychosis also exhibits delayed response of positive symptoms during neuroleptic treatment, and may also proceed to a praecox dementia in later life. In contrast, a putative neurodevelopmental psychosis, associated with static ventricles during the course of adult illness, also demonstrates preadolescent impairments, but impairments which do not progress to marked negative symptoms. Conventional neuroleptics appear to have little effect (except sedation) on positive symptoms, but appear to induce negative symptomatology and partial disengagement from the burden of persistent psychotic thought processes in such static ventricle psychoses. Thus, separate patterns of illnesses with different prodromal features, different treatment response patterns, and different patterns of residual (negative) symptoms appear to characterize patients with psychosis who have expanding as opposed to stable cerebral-ventricles at doses of neuroleptic at 10 mg haloperidol equivalents/day.
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PMID:Atrophic and static (neurodevelopmental) schizophrenic psychoses: premorbid functioning, symptoms and neuroleptic response. 1037 22

Second-trimester exposure to the 1957 A2 influenza pandemic is a controversial risk factor for schizophrenia. Two earlier studies of the Dutch psychiatric registry failed to find an increased risk for exposed subjects, but diagnostic misclassification within the spectrum of non-affective psychoses has not yet been ruled out as an explanation for the negative findings. Using an enlarged data-set we examined not only whether second-trimester exposure to the epidemic is associated with an increased risk of schizophrenia (ICD:295), but also whether it is associated with an increased risk of paranoid states (ICD:297) or other non-organic psychoses (ICD:298). In this retrospective cohort study the risks of the above-mentioned disorders were compared for those exposed and unexposed to A2 influenza during the second trimester of fetal life. The risks for the exposed subjects were not significantly higher than the risks for the unexposed. The power of the study to detect a significant increase in the risk of schizophrenia was sufficient. If the relative risk of a lifetime hospitalization for schizophrenia for second-trimester exposed subjects (born January-April 1958) is assumed to be 1.3, the power of the study would be 0.97 (alpha=0.05; one-tailed testing). If the relative risk for subjects born five months after the peak of the epidemic (mid-February to mid-March 1958) is assumed to be 1.88, as reported for England and Wales, the power of the study would be close to 1.00. This was the largest study of its kind in Europe: 275 subjects were born in the period January-April 1958 and had a lifetime hospitalization for schizophrenia. This study indicates that there is no relation between second-trimester exposure to the 1957 influenza pandemic and risk of non-affective psychosis in the Dutch population. It adds to a growing body of work which does not support an association between maternal influenza and schizophrenia.
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PMID:Prenatal exposure to the 1957 influenza pandemic and non-affective psychosis in The Netherlands. 1046 56


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