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Christopher Gillberg | |
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Born | |
Nationality | Swedish |
Occupation | Professor |
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Lars Christopher Gillberg (born 19 April 1950) is a professor of child and adolescent psychiatry at Gothenburg University in Gothenburg, Sweden. He has been a visiting professor at the universities of Bergen, New York, Odense, St George's (University of London), San Francisco, and Glasgow and Strathclyde. [1] [2] Gillberg is the founding editor of the journal European Child & Adolescent Psychiatry.
In the early 1980s, the concept of an 'autism spectrum' was introduced by Lorna Wing and Gillberg. [3] Gillberg has done extensive research into autism throughout his academic career. In 2003, a French and Swedish research team at the Institut Pasteur and the psychiatry departments at Gothenburg University and University of Paris, led by Thomas Bourgeron, Marion Leboyer and Gillberg, discovered the first precisely identified genetic mutations in individuals with autism. [4] The team identified mutations altering two genes on the X chromosome which seem to be implicated in the formation of synapses (communication spaces between neurons), in two families where several members are affected. Previous studies, such as the Paris Autism Research International Sib-Pair Study (PARIS), coordinated by Gillberg and Marion Leboyer, have more generally associated the X-chromosome regions with autism. The 2003 breakthrough indicated the location of the mutation to be on the NLGN4 gene and the NGLN3 gene. The mutation prevents a complete protein from forming and is inherited from the mother. [5]
Beginning in 2006, Gillberg is involved in a cross-disciplinary project titled "Autism spectrum conditions: the Gothenburg collaborative studies", funded by the Swedish Research Council (Vetenskapsrådet). [6] The project is a collaboration between scientists specialized in child and youth psychiatry, molecular biology and neuroscience and involves a genetic part with an international study team of French, British and U.S. researchers examining various aspects autism. Some of the results were published during 2007. [7] [8] The project also includes a genetic study on the Faroe Islands. [6] [9]
In the 1970s, Gillberg and co-workers developed the concept Deficits in Attention, Motor control and Perception (DAMP), which was primarily used in Scandinavia. [10] [11] The DAMP concept as used in more recent publications, refers to Attention-deficit hyperactivity disorder (ADHD) in combination with Developmental Coordination Disorder (DCD). According to Gillberg, it constitutes a "subgroup of the diagnostic category of ADHD, conceptually similar – but not clinically identical – to the WHO concept of HKD (hyperkinetic disorder)" and is diagnosed on the basis of "concomitant attention deficit/hyperactivity disorder and developmental coordination disorder in children who do not have severe learning disability or cerebral palsy". [12]
Some scholars disagree with the lumping of ADHD and DCD, arguing that they are unrelated. [13] Gillberg stated in 2003 that, although he opines that there is a "very real issue of how to deal with the conflict between splitting (ADHD plus developmental coordination disorder (DCD)) and lumping (DAMP)", he nevertheless feels that "the DAMP construct has been helpful in identifying a group of children with ADHD and multiple needs that will not be self evident if the diagnosis is just ADHD or just DCD." [12] Before the Scandinavian studies, recognition that individuals with attention problems may also have difficulties with movement, perception, and memory had received little attention in studies. [13] According to various studies, half of the children with ADHD also have DCD. [14]
With the development of the ADHD concept, the previous, less precise, category of Minimal Brain Dysfunction (MBD), "a term almost universally employed in child psychiatry and developmental paediatrics from the 1950s to the early 1980s" [12] was replaced. Gillberg began to study DAMP in the late 1970s, when ADHD was still called MBD and the DAMP concept has been adjusted as the term ADHD was introduced and became internationally used. Around 1990, DAMP had become a generally accepted diagnostic concept in two Nordic countries, [15] but when the DSM-IV appeared in 1994, DAMP became considered a redundant term in many countries, since DAMP is essentially equivalent to ADHD in combination with DCD as defined by DSM-IV. [12] [16] Gillberg's four criteria for DAMP are:
According to Gillberg, clinically severe form DAMP (or ADHD+DCD) affects about 1.5% of the general population of school age children; another few per cent are affected by more moderate variants. Boys are overrepresented; girls are currently probably underdiagnosed. There are many overlapping conditions, including conduct disorder, depression/anxiety, and academic failure. There is a strong link with autism spectrum disorders in severe DAMP. Familial factors and pre- and perinatal risk factors account for much of the variance. Psychosocial risk factors appear to increase the risk of marked psychiatric abnormality in DAMP. Outcome in early adult age was psychosocially poor in one study in almost 60% of unmedicated cases. About half of all cases with ADHD have DCD, and conversely, ADHD occurs in about half of all cases of DCD. [12]
As of December 2024 [update] , Gillberg has published 780 papers (listed at PubMed) on DAMP, ADHD and related conditions. [12]
In 1989, Gillberg became instrumental in the publication of the first diagnostic criteria for Asperger syndrome. [17] They are applied in clinical practice due to the adhesion to the original description of Hans Asperger. [18] All of the following six criteria must be met for confirmation of diagnosis: [19]
Gillberg's criteria differ from those given in the DSM-IV-TR. Some scholars have therefore criticized them for "making it difficult to compare with other studies." [20] It has been argued that the failure of some research groups to replicate some of Gillberg's findings "may relate primarily to fundamental differences in diagnostic approach". [20]
Gillberg has received several awards for his research, including:
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: CS1 maint: bot: original URL status unknown (link) Gothenburg University, 2001 (in Swedish)Asperger syndrome (AS), also known as Asperger's syndrome or Asperger's, was a diagnosis used to describe a neurodevelopmental disorder characterized by significant difficulties in social interaction and nonverbal communication, along with restricted, repetitive patterns of behavior and interests. Asperger syndrome has been merged with other conditions into autism spectrum disorder (ASD) and is no longer a diagnosis in the WHO's ICD-11 or the APA's DSM-5-TR. It was considered milder than other diagnoses which were merged into ASD due to relatively unimpaired spoken language and intelligence.
Attention deficit hyperactivity disorder (ADHD) is a neurodevelopmental disorder characterized by executive dysfunction occasioning symptoms of inattention, hyperactivity, impulsivity and emotional dysregulation that are excessive and pervasive, impairing in multiple contexts, and developmentally-inappropriate.
The diagnostic category pervasive developmental disorders (PDD), as opposed to specific developmental disorders (SDD), was a group of disorders characterized by delays in the development of multiple basic functions including socialization and communication. It was defined by the Diagnostic and Statistical Manual of Mental Disorders (DSM), and the International Classification of Diseases (ICD).
Developmental disorders comprise a group of psychiatric conditions originating in childhood that involve serious impairment in different areas. There are several ways of using this term. The most narrow concept is used in the category "Specific Disorders of Psychological Development" in the ICD-10. These disorders comprise developmental language disorder, learning disorders, developmental coordination disorders, and autism spectrum disorders (ASD). In broader definitions, attention deficit hyperactivity disorder (ADHD) is included, and the term used is neurodevelopmental disorders. Yet others include antisocial behavior and schizophrenia that begins in childhood and continues through life. However, these two latter conditions are not as stable as the other developmental disorders, and there is not the same evidence of a shared genetic liability.
Pervasive developmental disorder not otherwise specified (PDD-NOS) is a historic psychiatric diagnosis first defined in 1980 that has since been incorporated into autism spectrum disorder in the DSM-5 (2013).
Autism spectrum disorder (ASD) or simply autism is a neurodevelopmental disorder that begins in early childhood, persists throughout adulthood, and is characterized by difficulties in social communication and restricted, repetitive patterns of behavior. There are many conditions comorbid to autism, such as attention deficit hyperactivity disorder, anxiety disorders, and epilepsy.
High-functioning autism (HFA) was historically an autism classification to describe a person who exhibited no intellectual disability but otherwise showed autistic traits, such as difficulty in social interaction and communication, as well as repetitive, restricted patterns of behavior. The term is often applied to autistic people who are fluently verbal and of at least average intelligence. However, many in medical and autistic communities have called to stop using the term, finding it simplistic and unindicative of the difficulties some autistic people face.
Nonverbal learning disorder is a proposed neurodevelopmental disorder characterized by core deficits in nonverbal skills, especially visual-spatial processing. People with this condition have normal or advanced verbal intelligence and significantly lower nonverbal intelligence. A review of papers found that proposed diagnostic criteria were inconsistent. Proposed additional diagnostic criteria include intact verbal intelligence, and deficits in the following: visuoconstruction abilities, speech prosody, fine motor coordination, mathematical reasoning, visuospatial memory, and social skills. NVLD is not recognised by the DSM-5 and is not clinically distinct from learning disorders.
DAMP is a psychiatric concept conceived by Christopher Gillberg defined by the presence of five properties: problems of attention, gross and fine motor skills, perceptual deficits, and speech-language impairments. While routinely diagnosed in Scandinavian countries, the diagnosis has been rejected in the rest of the world. Minor cases of DAMP are roughly defined as a combination of developmental coordination disorder (DCD) and a pervading attention deficit.
Neurodevelopmental disorders are a group of mental conditions affecting the development of the nervous system, which includes the brain and spinal cord. According to the American Psychiatric Association Diagnostic and Statistical Manual of Mental Disorders, Fifth Edition, (DSM-5) published in 2013, these conditions generally appear in early childhood, usually before children start school, and can persist into adulthood. The key characteristic of all these disorders is that they negatively impact a person's functioning in one or more domains of life depending on the disorder and deficits it has caused. All of these disorders and their levels of impairment exist on a spectrum, and affected individuals can experience varying degrees of symptoms and deficits, despite having the same diagnosis.
The Gothenburg Study of Children with DAMP was a study of six-year-old children in Gothenburg, Sweden that began in 1977. The purpose was to find out what proportion of the children had Deficits in Attention, Motor control and Perception (DAMP), formerly known as Minimal Brain Disorder (MBD), and to follow the development of that group over the years. The results and discussions have been published in four dissertations and approximately 30 scientific papers.
Developmental coordination disorder (DCD), also known as developmental motor coordination disorder, developmental dyspraxia, or simply dyspraxia, is a neurodevelopmental disorder characterized by impaired coordination of physical movements as a result of brain messages not being accurately transmitted to the body. Deficits in fine or gross motor skills movements interfere with activities of daily living. It is often described as disorder in skill acquisition, where the learning and execution of coordinated motor skills is substantially below that expected given the individual's chronological age. Difficulties may present as clumsiness, slowness and inaccuracy of performance of motor skills. It is often accompanied by difficulty with organisation and/or problems with attention, working memory and time management.
Asperger syndrome (AS) was formerly a separate diagnosis under autism spectrum disorder. Under the DSM-5 and ICD-11, patients formerly diagnosable with Asperger syndrome are diagnosable with Autism Spectrum Disorder. The term is considered offensive by some autistic individuals. It was named after Hans Asperger (1906–80), who was an Austrian psychiatrist and pediatrician. An English psychiatrist, Lorna Wing, popularized the term "Asperger's syndrome" in a 1981 publication; the first book in English on Asperger syndrome was written by Uta Frith in 1991 and the condition was subsequently recognized in formal diagnostic manuals later in the 1990s.
Classic autism, also known as childhood autism, autistic disorder, or Kanner's syndrome, is a formerly diagnosed neurodevelopmental disorder first described by Leo Kanner in 1943. It is characterized by atypical and impaired development in social interaction and communication as well as restricted, repetitive behaviors, activities, and interests. These symptoms first appear in early childhood and persist throughout life.
Autism spectrum disorder (ASD), or simply autism, is a neurodevelopmental disorder characterized by repetitive, restricted, and inflexible patterns of behavior, interests, and activities; deficits in social communication and social interaction; and the presence of high or low sensory sensitivity. A formal diagnosis requires that symptoms cause significant impairment in multiple functional domains, in addition to being atypical or excessive for the person's age and sociocultural context.
Childhood schizophrenia is similar in characteristics of schizophrenia that develops at a later age, but has an onset before the age of 13 years, and is more difficult to diagnose. Schizophrenia is characterized by positive symptoms that can include hallucinations, delusions, and disorganized speech; negative symptoms, such as blunted affect and avolition and apathy, and a number of cognitive impairments. Differential diagnosis is problematic since several other neurodevelopmental disorders, including autism spectrum disorder, language disorder, and attention deficit hyperactivity disorder, also have signs and symptoms similar to childhood-onset schizophrenia.
Nicole Rinehart is a Professor in Clinical Psychology, Director of the Deakin Child Study Centre (DCSC) and Director of Clinical and Community Partnerships at Deakin University. She established the Deakin Child Study Centre in 2013. She is located in Victoria, Australia.
The history of autism spans over a century; autism has been subject to varying treatments, being pathologized or being viewed as a beneficial part of human neurodiversity. The understanding of autism has been shaped by cultural, scientific, and societal factors, and its perception and treatment change over time as scientific understanding of autism develops.
The Autism – Tics, ADHD, and other Comorbidities Inventory (A–TAC) is a psychological measure used to screen for other conditions occurring with tics. Along with tic disorders, it screens for autism spectrum disorders, attention deficit hyperactivity disorder (ADHD) and other conditions with onset in childhood. The A-TAC has been reported as valid and reliable for detecting most disorders in children. One telephone survey found it was not validated for eating disorders.
Jan K. Buitelaar is a Dutch medical doctor, psychiatrist, author, and academic. He is a professor of psychiatry and child and adolescent psychiatry at Radboud University Medical Centre and former Head of Child and Adolescent Psychiatry at Karakter Child and Adolescent Psychiatry.