The incidence and prevalence of pervasive developmental disorders: a Danish population-based study

2004 ◽  
Vol 34 (7) ◽  
pp. 1339-1346 ◽  
Author(s):  
M. B. LAURITSEN ◽  
C. B. PEDERSEN ◽  
P. B. MORTENSEN
Keyword(s):  
Pervasive Developmental Disorders ◽  
Developmental Disorders ◽  
Asperger’S Disorder ◽  
Asperger's Disorder ◽  
Population Based ◽  
Incidence Rates ◽  
Childhood Autism ◽  
Prevalence Studies ◽  
Incidence Studies ◽  
Atypical Autism

Background. Based on prevalence studies and the few incidence studies of pervasive developmental disorders (PDDs) the prevalence and incidence of these disorders have been claimed to be increasing.Method. The annual and age-specific prevalence and incidence rates of childhood autism, atypical autism, Asperger's disorder, and pervasive developmental disorder not otherwise specified (PDD-NOS) in Denmark during the period 1971–2000 in children younger than 10 years were estimated using data from the Danish Psychiatric Central Register.Results. A total of 2·4 million children younger than 10 years were followed and 2061 cases with the PDDs studied were identified. Generally, the prevalence and incidence rates of the PDDs studied were stable until the early 1990s after which an increase in the occurrence of all disorders was seen, until 2000. The annual incidence rate per 10000 children younger than 10 years was 2·0 for childhood autism, 0·7 for atypical autism, 1·4 for Asperger's disorder, and 3·0 for PDD-NOS in 2000. We calculated a ‘corrected’ prevalence of childhood autism at 11·8, atypical autism at 3·3, Asperger's disorder at 4·7, and PDD-NOS at 14·6 per 10000 children younger than 10 years on 1 January 1 2001.Conclusions. We found that the estimated prevalences of the PDDs studied were probably underestimated. Furthermore, the increasing prevalence and incidence rates during the 1990s may well be explained by changes in the registration procedures and more awareness of the disorders, although a true increase in the incidence cannot be ruled out.

scholarly journals A clinical study of phenomenology in subjects with pervasive developmental disorders

2018 ◽  
Vol 6 (11) ◽  
pp. 3629
Author(s):  
Dhananjay Chaudhari ◽  
Vivek Agarwal ◽  
Prabhat Sitholey
Keyword(s):  
Pervasive Developmental Disorders ◽  
Developmental Disorders ◽  
Rating Scale ◽  
Nuclear Family ◽  
Age Groups ◽  
Childhood Autism ◽  
Language Communication ◽  
Icd 10 ◽  
History Of ◽  
Atypical Autism

Background: Pervasive Developmental Disorders (PDD) are group of developmental disorder with impairments in interaction, communication and behaviour. The study aims to explore the phenomenological aspects of subjects with PDD.Methods: Patients in Psychiatry outpatient department (OPD), presented with impairment in social- interaction, language, communication and mental retardation were assessed for features of PDD by applying Developmental Behaviour Check List (DBCL), ICD-10 Diagnostic Criteria for Research and Multi-Axial version of ICD-10. The subjects were assessed for severity of PDD on Childhood Autism Rating Scale (CARS).Results: Total number of screened positive cases were 20, in which males were over-represented (90%). Majority belonged to urban locality (65%) and nuclear family (75%). Cases of childhood autism were found in all age groups, while childhood disintegrative disorder, Rett’s disorder and atypical autism were found in younger subjects. No family history of PDD was found in 1st degree relatives of PDD subjects. Five subjects (25%) had birth and perinatal complication.Conclusions: The mean age at presentation of the children with PDD was 8.12 years. Eighty percent (80%) of the subjects had severe autism on CARS.  Hyperactivity, inattention and impulsivity were present in 90%, 80% and 45% of subjects respectively.

scholarly journals The Prevalence and Incidence of Dementia with Lewy Bodies: a Systematic Review

2016 ◽  
Vol 43 (S1) ◽  
pp. S83-S95 ◽  
Author(s):  
David B. Hogan ◽  
Kirsten M. Fiest ◽  
Jodie I. Roberts ◽  
Colleen J. Maxwell ◽  
Jonathan Dykeman ◽  
...  
Keyword(s):  
Dementia With Lewy Bodies ◽  
Lewy Bodies ◽  
Population Based ◽  
Incidence Rates ◽  
Prevalence Studies ◽  
Societal Burden ◽  
Incidence Studies ◽  
Prevalence Estimates ◽  
Older Populations ◽  
Quality Assessments

ABSTRACTBackgroundPopulation-based prevalence and incidence studies are essential for understanding the societal burden of dementia with Lewy bodies (DLB).MethodsThe MEDLINE and EMBASE databases were searched to identify publications addressing the incidence and/or prevalence of DLB. References of included articles and prior systematic reviews were searched for additional studies. Two reviewers screened all abstracts and full-text reviews, abstracted data and performed quality assessments.ResultsTwenty-two studies were included. Incidence rates ranged from 0.5 to 1.6 per 1000 person-years. DLB accounted for 3.2-7.1% of all dementia cases in the incidence studies. Point and period prevalence estimates ranged from 0.02 to 63.5 per 1000 persons. Increasing prevalence estimates were reported with increasing age. DLB accounted for from 0.3 to 24.4% of all cases of dementia in the prevalence studies.ConclusionsDLB becomes more common with increasing age and accounts for about 5% of all dementia cases in older populations.

Autism and other Pervasive Developmental Disorders: Exploring the Dimensional View

1998 ◽  
Vol 43 (6) ◽  
pp. 589-595 ◽  
Author(s):  
Gail Myhr
Keyword(s):  
Diagnostic Criteria ◽  
Pervasive Developmental Disorder ◽  
Pervasive Developmental Disorders ◽  
Developmental Disorders ◽  
Developmental Disorder ◽  
Asperger’S Disorder ◽  
Asperger's Disorder ◽  
Autistic Symptoms ◽  
Dsm Iv ◽  
Higher Functioning

Objective: To examine empirical data on children with autistic disorder (AD), Asperger's disorder, and pervasive developmental disorder not otherwise specified (PDD-NOS) for continuities or distinguishing features between disorders and to see to what extent the Diagnostic and Statistical Manual of Mental Disorders (DSM-IV) diagnostic criteria reflect observed data. Method: Studies were identified in 4 ways. 1) A Medline search from 1976 to the present of articles with the key words autism, pervasive developmental disorder, autistic spectrum disorder, and Asperger; of these articles, those with mesh headings or textwords “cluster,” which identified cluster analyses deriving pervasive developmental disorder (PDD) subtypes, were retained. 2) The Journal of Autistic and Developmental Disorders from 1990 to the present was hand-searched to identify other empirically derived studies on diagnosis, prevalence, classification, and validity of PDD subtypes. 3) Key review articles were searched for their references. 4) The references of all identified articles were searched. Results: Eight cluster studies were retained for their relevance to diagnostic issues, as were 7 empirically derived studies delineating clinical characteristics of children with AD, Asperger's syndrome, or PDD-NOS. Data suggest that children with PDD may fit into 1 of 2 overlapping groups, including a lower-functioning group with greater developmental compromise, social aloofness, and a greater number of autistic symptoms and a higher-functioning group with higher IQ, fewer autistic symptoms, and more prosocial behaviour. The PDD subtypes resemble each other and can be seen as existing on a continuum, differing only by degree of impairment. Conclusion: Children exhibiting the triad of autistic impairments can be seen as suffering from disorders on a PDD continuum. While the DSM-IV does identify a lower-functioning autistic group (AD), the higher-functioning group is less well served. Asperger's disorder as defined in the DSM-IV is not clearly distinguishable from AD and PDD-NOS, and the PDD-NOS subcategory is not operationalized. Further research is required to elaborate criteria for the higher-functioning PDD group, and measures related to etiology, outcome, and treatment response may help determine which diagnostic criteria can meaningfully separate one disorder from another.

scholarly journals Prevalence and Incidence Studies of Schizophrenic Disorders: A Systematic Review of the Literature

2002 ◽  
Vol 47 (9) ◽  
pp. 833-843 ◽  
Author(s):  
Elliot M Goldner ◽  
Lorena Hsu ◽  
Paul Waraich ◽  
Julian M Somers
Keyword(s):  
Systematic Review ◽  
English Language ◽  
Incidence Rates ◽  
World Health ◽  
Significant Heterogeneity ◽  
Review Of The Literature ◽  
Local Data ◽  
Eligibility Criteria ◽  
Prevalence Studies ◽  
Incidence Studies

Objective: To present the results of a systematic review of the literature published between January 1, 1980, and December 31, 2000, that reports findings on the prevalence and incidence of schizophrenia and related disorders. Method: We conducted a literature search of schizophrenia-related epidemiological studies, using Medline and HealthSTAR databases and canvassing English-language publications. We used a set of predetermined inclusion-exclusion criteria to identify relevant studies. Eligible publications were restricted to age ranges of 18 years and over for prevalence studies and 15 years and over for incidence studies. Prevalence and incidence data were extracted and analyzed for heterogeneity. Results: A total of 18 prevalence and 8 incidence studies met eligibility criteria for the review. Heterogeneity analysis revealed significant differences across 1-year and lifetime prevalence and 1-year incidence of schizophrenia. The corresponding pooled rates were: 0.34 per 100, 0.55 per 100, and 11.1 per 100 000, respectively; the variation in rates between studies was generally between 2- and 5-fold. Conclusions: Although we restricted this review to studies using rigorous and relatively homogeneous methods, there remains significant heterogeneity of prevalence and incidence rates. This strengthens support for the hypothesis that there is real variation in the distribution of schizophrenia around the world. Health planners need to have local data on schizophrenia rates to improve the accuracy of their interventions, while clinicians and researchers need to continue to investigate the etiology of this variation.

Terapia cu ajutorul calului ca metodă sportivă în afecțiunile psihomotorii: Un studiu controlat pretest-posttest

2017 ◽  
Vol 8 (1-2) ◽  
pp. 87-116
Author(s):  
Anca Nicoleta Bîlbă
Keyword(s):  
Pervasive Developmental Disorders ◽  
Developmental Disorders ◽  
Alternative Therapy ◽  
Assessment System ◽  
Control Group ◽  
Psychomotor Disorders ◽  
Icd 10 ◽  
Adaptive Behavior Assessment System ◽  
Group A ◽  
Atypical Autism

Pervasive developmental disorders are a series of illnesses characterized by delays in the development of some basic functions, such as the ability to communicate and socialize, but also through a small number of interests or activities, and according to ICD-10 (1996), in this category can include childhood autism, where deficiencies at these levels are identified, being identified until the age of three years or atypical autism - common in people with mental retardation or with responsive language disorders. A form of alternative therapy focused on these dimensions is horse-therapy therapy, a rapidly expanding approach in recent years, both with the aim of empirical substantiation and implementation of its different application centers to alleviate psychomotor deficiencies and emotional. This study aims to analyze the results obtained from horse-assisted therapy on psychomotor disorders in children with autistic spectrum disorders, epilepsy, ADHD or cerebral palsy. A group of 64 children aged between 2 and 14 years, biological age, participated in the study. 41 children were part of the study group, 23 constituting the control group. A controlled research model with pretest-posttest measurements was used. The effect of horse therapy on adaptive skills was evaluated. The ABAS II Adaptive Behavior Assessment System was used to measure these skills. The results indicate that hypothyroid therapy is effective in increasing the adaptability of children with psychomotor disorders.

scholarly journals Evidence based case report: Pyridoxine supplementation in children with pervasive developmental disorders

2014 ◽  
Vol 54 (3) ◽  
pp. 186
Author(s):  
Sekarpramita Darmaputri ◽  
Tjhin Wiguna
Keyword(s):  
Serotonin Receptors ◽  
Pervasive Developmental Disorders ◽  
Developmental Disorders ◽  
Developmental Disorder ◽  
Social Withdrawal ◽  
Neurodevelopmental Disorder ◽  
Psychotropic Medications ◽  
The Other ◽  
Evidence Based ◽  
Atypical Autism

Pervasive developmental disorders (PDD)is defined as a neurodevelopmental disorder,c haract erized by social withdrawal,communication deficits, and repetitivebehaviors. PDD include autistic disorder, Rett'ssyndrome, childhood disintegrative disorder, Asperger' ssyndrome, and pervasive developmental disorder nototherwise specified or atypical autism.1 Update ofepidemiological studies published between 1966 and2006 show reports of estimated prevalence for autismhas varied between 3 .31 and 86 children per 10,000, 2and predominantly occurs in males than females(male:female ratio = 4: 1) .3There is a hypothesis that behavioral problemsin children with pervasive developmental disorderare highly associated with the neurotransmitterimbalances. Therefore, psychotropic medications (eg.atypical antipsychotics, selective serotonin reuptakeinhibitors, and psychostimulants), which work ondopamine and serotonin receptors, are the FDAapprovedmedications for PDD.4 On the other hands,the use of novel, unconventional, and/or off- labeltreatments associated with the n eurotransmitterspathway for children with POD is increasing andmore common.

Autism and the pervasive developmental disorders

2012 ◽  
pp. 1633-1643
Author(s):  
Fred R. Volkmar ◽  
Ami Klin
Keyword(s):  
Pervasive Developmental Disorders ◽  
Developmental Disorders ◽  
Treatment And Prevention ◽  
Communicative Development ◽  
Icd 10 ◽  
Stereotyped Movement ◽  
Dsm Iv ◽  
Social Communicative ◽  
Rett’S Syndrome ◽  
Atypical Autism

The pervasive developmental disorders (PDDs) are characterized by patterns of deviance and delay in social-communicative development in the first years of life, which are associated with restricted patterns of interest or behaviour. The prototypic PDD is childhood autism; other conditions included in the PDD class in ICD-10 include Rett's syndrome, childhood disintegrative disorder, Asperger's syndrome, and atypical autism. Except for one additional category in ICD-10 (hyperkinetic stereotyped movement disorder), the disorders included in ICD-10 and DSM-IV are essentially identical. In this chapter each of these conditions will be reviewed in terms of their clinical features, definition, epidemiology, course, and aetiology; final sections of the chapter address aspects of treatment and prevention for the group of disorders as a whole (Box 9.2.3.1).

Difficulties in the Understanding of False Belief: Specific to Autism and other Pervasive Developmental Disorders?

1998 ◽  
Vol 82 (1) ◽  
pp. 51-57
Author(s):  
Peter Muris ◽  
Pim Steerneman ◽  
Harald Merckelbach
Keyword(s):  
Pervasive Developmental Disorders ◽  
Developmental Disorders ◽  
Developmental Disorder ◽  
False Belief ◽  
Autistic Children ◽  
False Belief Task ◽  
Normal Children ◽  
Not Otherwise Specified ◽  
Atypical Autism ◽  
Better Than

The present study examined the performance on a false belief task of atypical autistic children, i.e., children with a pervasive developmental disorder not otherwise specified ( n = 50), socially immature children (n = 50), and normal children ( n = 50). Children were shown a chocolate box and its unexpected content, i.e., a pencil, and then required to indicate what a friend would say about the content of the box. Results can be summarized: (1) over-all, 3-year-old children performed less well than children of 6 years. (2) Responses of 3-year-old atypical autistic and socially immature children did not differ significantly from those of normal children of the same age. (3) At age 6, normal children performed better than atypical autistic and socially immature children. (4) In general, no differences in performance between atypical autistic and socially immature children were found, and (5) their performance was linked to intelligence. The results support prior findings that atypical autistic children find it difficult to understand false beliefs; however, this difficulty does not seem to be specific for (atypical) autism, but might be a common feature of social immaturity in general.

Terapia cu ajutorul calului ca metodă sportivă în afecțiunile psihomotorii: Un studiu controlat pretest-posttest

2018 ◽  
Vol 8 (1-2) ◽  
pp. 87-116
Author(s):  
Anca Nicoleta Bîlbă
Keyword(s):  
Pervasive Developmental Disorders ◽  
Developmental Disorders ◽  
Alternative Therapy ◽  
Assessment System ◽  
Control Group ◽  
Psychomotor Disorders ◽  
Icd 10 ◽  
Adaptive Behavior Assessment System ◽  
Group A ◽  
Atypical Autism

Pervasive developmental disorders are a series of illnesses characterized by delays in the development of some basic functions, such as the ability to communicate and socialize, but also through a small number of interests or activities, and according to ICD-10 (1996), in this category can include childhood autism, where deficiencies at these levels are identified, being identified until the age of three years or atypical autism - common in people with mental retardation or with responsive language disorders. A form of alternative therapy focused on these dimensions is horse-therapy therapy, a rapidly expanding approach in recent years, both with the aim of empirical substantiation and implementation of its different application centers to alleviate psychomotor deficiencies and emotional. This study aims to analyze the results obtained from horse-assisted therapy on psychomotor disorders in children with autistic spectrum disorders, epilepsy, ADHD or cerebral palsy. A group of 64 children aged between 2 and 14 years, biological age, participated in the study. 41 children were part of the study group, 23 constituting the control group. A controlled research model with pretest-posttest measurements was used. The effect of horse therapy on adaptive skills was evaluated. The ABAS II Adaptive Behavior Assessment System was used to measure these skills. The results indicate that hypothyroid therapy is effective in increasing the adaptability of children with psychomotor disorders.

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