Early-onset schizophrenia in children with mental retardation: diagnostic reliability and stability of clinical features

Oscillatory Activities in Multiple Frequency Bands in Patients with Schizophrenia During Motion Perception

Patients with schizophrenia show impairment in binding stimulus features into coherent objects, which are reflected in disturbed oscillatory activities. This study aimed to identify disturbances in multiple oscillatory bands during perceptual organization of motion perception in patients with schizophrenia. EEG was recorded from healthy controls and patients with schizophrenia during continuous presentation of a motion stimulus which induces reversals between two exogenously generated perceptions. This stimulus was used to investigate differences in motion binding processes between healthy controls and patients with schizophrenia. EEG signals were transformed into frequency components by means of the Morlet wavelet transformation in order to analyse inter-trial coherences (ITC) in the delta (1-4 Hz), theta (4-7 Hz), alpha (8-12 Hz), and gamma (28-48 Hz) frequency bands during exogenous motion binding. Patients showed decreased delta-ITC in occipital and theta-ITC in central and parietal areas, while no significant differences were found for neither alpha nor gamma-ITCs. The present study provides one of the first insights on the oscillatory synchronizations related with the motion perception in schizophrenia. The ITC differences revealed alterations in the consistency of large-scale integration and transfer functions in patients with schizophrenia.

Facial, vocal and cross-modal emotion processing in early-onset schizophrenia spectrum disorders

Recognition of emotional expressions plays an essential role in children's healthy development. Anomalies in these skills may result in empathy deficits, social interaction difficulties and premorbid emotional problems in children and adolescents with schizophrenia. Twenty-six subjects with early onset schizophrenia spectrum (EOSS) disorders and twenty-eight matched healthy controls (HC) were instructed to identify five basic emotions and a neutral expression. The assessment entailed presenting visual, auditory and congruent cross-modal stimuli. Using a generalized linear mixed model, we found no significant association for handedness, age or gender. However, significant associations emerged for emotion type, perception modality, and group. EOSS patients performed worse than HC in uni- and cross-modal emotional tasks with a specific negative emotion processing impairment pattern. There was no relationship between emotion identification scores and positive or negative symptoms, self-reported empathy traits or a positive history of developmental disorders. However, we found a significant association between emotional identification scores and nonverbal communication impairments. We conclude that cumulative dysfunctions in both nonverbal communication and emotion processing contribute to the social vulnerability and morbidity found in youths who display EOSS disorder.

The presentation of early-onset psychotic disorders

OBJECTIVE

This study aims to describe the clinical course of psychotic disorders, including the premorbid history, symptoms and level of functioning in a group of children and adolescents treated by paediatric mental health services, mainly as inpatients.

METHOD

A sample of 45 children and adolescents with a psychotic disorder (mean age 13.2 years) was assessed using questionnaires, semi-structured interviews, parent interviews and file audit. The symptoms of those with a schizophrenia spectrum disorder (SSD) were compared to those with a mood disorder (MD).

RESULTS

This population showed a high level of premorbid impairment, including previous treatment for other psychiatric disorders. As well as hallucinations and delusions, high levels of self-harm, aggression, anxiety and depression were reported. The SSD and MD groups differed mainly in their levels of premorbid functioning.

CONCLUSIONS

While it is well known that childhood-onset schizophrenia is a severe disorder with a poor outcome, this study found that young people diagnosed with other psychotic disorders also have significant impairment and are likely to require high levels of care to maximize their functional recovery.

Deficient maturation of aspects of attention and executive functions in early onset schizophrenia

The few existing long-term, neuropsychological follow-up studies of early onset schizophrenia (EOS) patients have reported relative stability in some cognitive functions but abnormal developmental trajectories in verbal memory, set shifting, aspects of attention, and speed of information processing throughout late adolescence into early adulthood. The current 5-year follow-up study compared the development of specific cognitive functions in EOS patients (N = 17) from the time of first-episode to chronic phase with that of healthy controls (N = 38) and secondarily to patients with other early onset, non-organic, non-affective psychoses (EOP) (N = 11). Speed of processing of executive functions, set shifting, and attention improved significantly in the healthy controls and reflected continuous functional maturation during late adolescence and early adulthood. The developmental progression of attention and set shifting but not speed of processing of executive functions was significantly subnormal in EOS patients. Other specific cognitive functions that had attained functional maturity in the healthy controls before or around the time of the baseline assessment showed normal development in EOS patients during the follow-up period, indicating stable cognitive deficits. These results suggest post-onset developmental deficits in two out of the three aspects of attention and executive functions that have protracted maturational trajectories and that overlap the age of onset of EOS. No significant difference in the development of any specific cognitive function was found between the EOS and EOP group.

Use of the ADOS and ADI-R in children with psychosis: importance of clinical judgment

The Autism Diagnostic Observation Schedule (ADOS) and the Autism Diagnostic Interview - Revised (ADI-R) are considered to be the 'gold standard' in diagnostic evaluations for autism. Developed as research tools and now gaining wide clinical use, the ADOS/ADI-R assessment package has been demonstrated to differentiate children with autism from those with other developmental disabilities; however, little work concerning the reliability and validity of the tools in children with a known history of psychosis has been undertaken. We report on the administration of the ADOS, ADI-R and clinical judgment in three cases of Childhood-Onset Schizophrenia. All 3 children met both ADOS and ADI-R criteria for an autism spectrum diagnosis, even though none of them received a clinical diagnosis of autism from either a research child psychiatrist or an experienced clinically trained, research psychologist with expertise in autism. Issues concerning overlap of symptom presentation and implications for research and clinical use of these assessment tools are discussed.

The mental health paradigm and the MacArthur study: emerging issues challenging the competence of juveniles in delinquency systems

Understanding the factors that impact a juvenile's adjudicative competence in delinquency and criminal proceedings today requires some familiarity with mental illness, mental retardation, and developmental immaturity. Current research and studies shed new light on these factors that juvenile advocates, prosecutors, judges, and policymakers must routinely confront. This article discusses some of the issues involved in competency determinations of juveniles awaiting trial; addressing both the more traditional factors, such as mental illness and mental retardation, and some of the more recent studies and literature identifying developmental immaturity as an emerging basis for challenging the competency of juveniles to stand trial.

Juvenile justice systems routinely presume that adolescents accused of delinquent or criminal misconduct are competent to stand trial. Adults charged with criminal misconduct are also presumed to be competent. Competency requires that citizens accused of criminal misconduct understand the charges against them, have rudimentary understanding of the court process, be able to understand and answer questions posed to them by their counsel, and be able to make decisions about their trial such as whether to testify, and whether to accept or reject plea bargains.

Syndromes and disorders associated with mental retardation

This article reviews selective comments on the concept of Mental Retardation (MR) in adolescents. Issues covered include the definition, prevalence, and differential diagnosis of MR. Some of the syndromes and disorders associated with MR in the adolescents are also considered with emphasis on the behavioral concerns that may be present in this age group. Finally, concepts of management by the clinician are reviewed. It is recommended that health care professionals caring for adolescents with MR should help these youths maximize their potential as human beings, helping them achieve meaningful functioning in adulthood.

Patients as parents and young people approaching adulthood: how should we manage the interface between mental health services for young people and adults?

PURPOSE OF REVIEW

The present review discusses critically recent research findings (published during the period 2003-2004) on the mental health needs of young people in transition (old adolescents and young adults), including those of young parents. Also, the evidence on effective interventions and service models is considered.

RECENT FINDINGS

Emerging evidence indicates that young people have high rates of mental health needs (in addition to high prevalence of psychiatric disorders) that may be related to life transitions. These needs often fall between the remit of adolescent/adult and mental health/social care services, and therefore are not adequately met. With the exception of mental health interventions for early psychosis and psychosocial programmes for teenage parents, there is very limited knowledge on how best to meet the mental health needs of young people in transition.

SUMMARY

It is widely recognized that young people in transition require services and interventions tailored to their characteristics, rather than a mere extension to either child/adolescent or adult services. Recent policies and research findings have led to the development of early psychosis interventions, with initial encouraging messages. Similar initiatives are required for young people with nonpsychotic disorders.

Pfropfschizophrenia in the age of deinstitutionalization: whose problem?

BACKGROUND

The Kraepelinian concept of pfropfschizophrenia refers to the intertwined coexistence of mental retardation and schizophrenia. Patients with this syndrome are relatively treatment resistant and are often harmed by diverging policies and cost cuts within the framework of mental health care services. Thus, a better understanding of this syndrome has important practical implications. The multiple problems that these patients encounter in various educational and health care agencies and what questions need to be asked to better elucidate these patients' needs are assessed.

DATA

Three case reports of adult long-term inpatients fulfilling the criteria for pfropfschizophrenia are presented. Their current mental status and illness histories are discussed in relation to hypothesized pathophysiological processes and current needs.

LIMITATIONS

Small cohort, naturalistic study.

CONCLUSIONS

Pfropfschizophrenia is a phenotypically heterogeneous syndrome. The chronology of the appearance of cognitive deficits and psychotic symptoms during the course of this disorder should be carefully assessed because it may reflect diverse pathophysiological processes, necessitating differentiated, specific treatment interventions.

Early-onset psychosis in youth with intellectual disability

BACKGROUND

Accurate diagnosis of psychotic disorders may be very difficult in youth with intellectual disabilities.

METHOD

The authors reviewed the assessment, treatment and follow-up of 21 youths with ID referred because of early onset of psychotic symptoms.

RESULTS

Just over one half of the patients had a diagnosis of schizophrenia or schizoaffective disorder. One third of the sample carried the diagnosis of psychosis NOS (not otherwise specified). After careful review, five out of seven of these psychotic-like cases were assessed as non-psychotic. Patients with Psychosis NOS associated with moderate or severe ID had the worst outcome.

CONCLUSION

This clinical review provides important information about the identification, diagnosis and outcome of psychotic symptoms in youth with low verbal abilities.