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Autism is not a disease, but a developmental disorder of brain function. People with classical autism show three types of symptoms: impaired
social interaction, problems with verbal and nonverbal communication, and unusual or severely limited activities and interests. Symptoms of
autism usually appear during the first three years of childhood and continue throughout life. Although there is no cure, appropriate early
educational intervention may improve social development and reduce undesirable behaviors. People with autism have a normal life expectancy.
social interaction, problems with verbal and nonverbal communication, and unusual or severely limited activities and interests. Symptoms of
autism usually appear during the first three years of childhood and continue throughout life. Although there is no cure, appropriate early
educational intervention may improve social development and reduce undesirable behaviors. People with autism have a normal life expectancy.
What is Autism?
Autism affects an estimated 10 to 20 of every 10,000 people, depending on the diagnostic criteria used. Most estimates that include people
with similar disorders are two to three times greater. Autism strikes males about four times as often as females, and has been found
throughout the world in people of all racial and social backgrounds.
Autism varies a great deal in severity. The most severe cases are marked by extremely repetitive, unusual, self-injurious, and
aggressive behavior. This behavior may persist over time and prove very difficult to change, posing a tremendous challenge to those who
must live with, treat, and teach these individuals. The mildest forms of autism resemble a personality disorder associated with a perceived
learning disability.
What are some common signs of autism?
The hallmark feature of autism is impaired social interaction. Children with autism may fail to respond to their names and often avoid
looking at other people. They often have difficulty interpreting tone of voice or facial expressions and do not respond to others' emotions or
watch other people's faces for cues about appropriate behavior. They appear unaware of others' feelings toward them and of the negative
impact of their behavior on other people.
Many children with autism engage in repetitive movements such as rocking and hair twirling, or in self-injurious behavior such as biting or
head-banging. They also tend to start speaking later than other children and may refer to themselves by name instead of "I" or "me." Some
speak in a sing-song voice about a narrow range of favorite topics, with little regard for the interests of the person to whom they are
speaking.
People with autism often have abnormal responses to sounds, touch, or other sensory stimulation. Many show reduced sensitivity to pain.
They also may be extraordinarily sensitive to other sensations. These unusual sensitivities may contribute to behavioral symptoms such as
resistance to being cuddled.
How is autism diagnosed?
Autism is classified as one of the pervasive developmental disorders. Some doctors also use terms such as "emotionally disturbed" to
describe people with autism. Because it varies widely in its severity and symptoms, autism may go unrecognized, especially in mildly
affected individuals or in those with multiple handicaps. Researchers and therapists have developed several sets of diagnostic criteria for
autism. Some frequently used criteria include:*
* Absence or impairment of imaginative and social play
* Impaired ability to make friends with peers
* Impaired ability to initiate or sustain a conversation with others
* Stereotyped, repetitive, or unusual use of language
* Restricted patterns of interests that are abnormal in intensity or focus
* Apparently inflexible adherence to specific routines or rituals
* Preoccupation with parts of objects
Children with some symptoms of autism, but not enough to be diagnosed with the classical form of the disorder, are often diagnosed with
pervasive developmental disorder - not otherwise specified (PDD - NOS). People with autistic behavior but well-developed language skills
are often diagnosed with Asperger syndrome. Children who appear normal in their first several years, then lose skills and begin showing
autistic behavior, may be diagnosed with childhood disintegrative disorder (CDD). Girls with Rett syndrome, a sex-linked genetic disorder
characterized by inadequate brain growth, seizures, and other neurological problems, also may show autistic behavior. PDD - NOS,
Asperger syndrome, CDD, and Rett syndrome are referred to as autism spectrum disorders.
Since hearing problems can be confused with autism, children with delayed speech development should always have their hearing
checked. Children sometimes have impaired hearing in addition to autism. About half of people with autism score below 50 on IQ tests, 20
percent score between 50 and 70, and 30 percent score higher than 70. However, estimating IQ in young children with autism is often
difficult because problems with language and behavior can interfere with testing. A small percentage of people with autism are savants.
These people have limited but extraordinary skills in areas like music, mathematics, drawing, or visualization.
What causes autism?
Autism has no single cause. Researchers have identified a number of genes that play a role in the disorder. In some children,
environmental factors also may play a role in development of the disorder. Studies of people with autism have found abnormalities in several
regions of the brain, including the cerebellum, amygdala, hippocampus, septum, and mamillary bodies. Neurons in these regions appear
smaller than normal and have stunted nerve fibers, which may interfere with nerve signaling. These abnormalities suggest that autism results
from disruption of normal brain development early in fetal development. Other studies suggest that people with autism have abnormalities of
serotonin or other signaling molecules in the brain. While these findings are intriguing, they are preliminary and require further study. The
early belief that parental practices are responsible for autism has now been disproved.
In a minority of cases, disorders such as fragile X syndrome, tuberous sclerosis, untreated phenylketonuria (PKU), and congenital
rubella cause autistic behavior. Other disorders, including Tourette syndrome, learning disabilities, and attention deficit disorder, often occur
with autism but do not cause it. While people with schizophrenia may show some autistic-like behavior, their symptoms usually do not
appear until the late teens or early adulthood. Most people with schizophrenia also have hallucinations and delusions, which are not found in
autism.
What role does genetics play?
Recent studies strongly suggest that some people have a genetic predisposition to autism. Scientists estimate that, in families with one
autistic child, the risk of having a second child with the disorder is approximately five percent, or one in 20, which is greater than the risk
for the general population. Researchers are looking for clues about which genes contribute to this increased susceptibility. In some cases,
parents and other relatives of an autistic person show mild social, communicative, or repetitive behaviors that allow them to function
normally but appear linked to autism. Evidence also suggests that some affective, or emotional, disorders occur more frequently than
average in families of people with autism.
Do symptoms of autism change over time?
Symptoms in many children with autism improve with intervention or as the children mature. Some people with autism eventually lead
normal or near-normal lives. About a third of children with autistic spectrum disorders eventually develop epilepsy. The risk is highest in
children with severe cognitive impairment and motor deficits. Adolescence may worsen behavior problems in some children with autism,
who may become depressed or increasingly unmanageable. Parents should be ready to adjust treatment for their child's changing needs.
How can autism be treated?
There is no cure for autism at present. Many times individuals with autism don't want to be "cured" of autism anyways. It is a part of who
they are. Therapies, or interventions, are designed to remedy specific symptoms in each individual. Interventions can equip individuals to
live a fullfilling life with their autism. The best-studied therapies include educational/behavioral and medical interventions. Although these
interventions do not cure autism, they often bring about substantial improvement. Educational/behavioral interventions: These strategies
emphasize highly structured and often intensive skill-oriented training that is tailored to the individual child. Therapists work with children to
help them develop social and language skills. Because children learn most effectively and rapidly when very young, this type of therapy
should begin as early as possible. Recent evidence suggests that early intervention has a good chance of favorably influencing brain
development.
Medication: Doctors may prescribe a variety of drugs to reduce self-injurious behavior or other troublesome symptoms of autism, as well as
associated conditions such as epilepsy and attention disorders. Most of these drugs affect levels of serotonin or other signaling chemicals in
the brain.
Many other interventions are available, but few, if any, scientific studies support their use. These therapies remain controversial and may or
may not reduce a specific person's symptoms. Parents should use caution before subscribing to any particular treatment. Counseling for the
families of people with autism also may assist them in coping with the disorder.
What aspects of autism are being studied?
The NINDS is the Federal Government's leading supporter of biomedical research on brain and nervous system disorders, including
autism. The NINDS conducts research in its laboratories at the National Institutes of Health, in Bethesda, Maryland, and supports research
at other institutions through grants.
NINDS-supported research includes studies aimed at identifying the underlying brain abnormalities of autism through new methods of brain
imaging and other innovative techniques. Researchers also are investigating possible biologic markers present at birth that can identify
infants at risk for the development of autism. Some scientists hope to identify genes that increase the risk of autism. Others are studying
specific aspects of behavior, information processing, and other characteristics to learn precisely how children with autism differ from other
people and how these characteristics change over time. The findings may lead to improved strategies for early diagnosis and intervention.
Related studies are examining how the cerebellum develops and processes information, how different brain regions function in relation to
each other, and how alterations in this relationship during development may result in the signs and symptoms of autism. Researchers hope
this research will provide new clues about how autism develops and how brain abnormalities affect behavior.
with similar disorders are two to three times greater. Autism strikes males about four times as often as females, and has been found
throughout the world in people of all racial and social backgrounds.
Autism varies a great deal in severity. The most severe cases are marked by extremely repetitive, unusual, self-injurious, and
aggressive behavior. This behavior may persist over time and prove very difficult to change, posing a tremendous challenge to those who
must live with, treat, and teach these individuals. The mildest forms of autism resemble a personality disorder associated with a perceived
learning disability.
What are some common signs of autism?
The hallmark feature of autism is impaired social interaction. Children with autism may fail to respond to their names and often avoid
looking at other people. They often have difficulty interpreting tone of voice or facial expressions and do not respond to others' emotions or
watch other people's faces for cues about appropriate behavior. They appear unaware of others' feelings toward them and of the negative
impact of their behavior on other people.
Many children with autism engage in repetitive movements such as rocking and hair twirling, or in self-injurious behavior such as biting or
head-banging. They also tend to start speaking later than other children and may refer to themselves by name instead of "I" or "me." Some
speak in a sing-song voice about a narrow range of favorite topics, with little regard for the interests of the person to whom they are
speaking.
People with autism often have abnormal responses to sounds, touch, or other sensory stimulation. Many show reduced sensitivity to pain.
They also may be extraordinarily sensitive to other sensations. These unusual sensitivities may contribute to behavioral symptoms such as
resistance to being cuddled.
How is autism diagnosed?
Autism is classified as one of the pervasive developmental disorders. Some doctors also use terms such as "emotionally disturbed" to
describe people with autism. Because it varies widely in its severity and symptoms, autism may go unrecognized, especially in mildly
affected individuals or in those with multiple handicaps. Researchers and therapists have developed several sets of diagnostic criteria for
autism. Some frequently used criteria include:*
* Absence or impairment of imaginative and social play
* Impaired ability to make friends with peers
* Impaired ability to initiate or sustain a conversation with others
* Stereotyped, repetitive, or unusual use of language
* Restricted patterns of interests that are abnormal in intensity or focus
* Apparently inflexible adherence to specific routines or rituals
* Preoccupation with parts of objects
Children with some symptoms of autism, but not enough to be diagnosed with the classical form of the disorder, are often diagnosed with
pervasive developmental disorder - not otherwise specified (PDD - NOS). People with autistic behavior but well-developed language skills
are often diagnosed with Asperger syndrome. Children who appear normal in their first several years, then lose skills and begin showing
autistic behavior, may be diagnosed with childhood disintegrative disorder (CDD). Girls with Rett syndrome, a sex-linked genetic disorder
characterized by inadequate brain growth, seizures, and other neurological problems, also may show autistic behavior. PDD - NOS,
Asperger syndrome, CDD, and Rett syndrome are referred to as autism spectrum disorders.
Since hearing problems can be confused with autism, children with delayed speech development should always have their hearing
checked. Children sometimes have impaired hearing in addition to autism. About half of people with autism score below 50 on IQ tests, 20
percent score between 50 and 70, and 30 percent score higher than 70. However, estimating IQ in young children with autism is often
difficult because problems with language and behavior can interfere with testing. A small percentage of people with autism are savants.
These people have limited but extraordinary skills in areas like music, mathematics, drawing, or visualization.
What causes autism?
Autism has no single cause. Researchers have identified a number of genes that play a role in the disorder. In some children,
environmental factors also may play a role in development of the disorder. Studies of people with autism have found abnormalities in several
regions of the brain, including the cerebellum, amygdala, hippocampus, septum, and mamillary bodies. Neurons in these regions appear
smaller than normal and have stunted nerve fibers, which may interfere with nerve signaling. These abnormalities suggest that autism results
from disruption of normal brain development early in fetal development. Other studies suggest that people with autism have abnormalities of
serotonin or other signaling molecules in the brain. While these findings are intriguing, they are preliminary and require further study. The
early belief that parental practices are responsible for autism has now been disproved.
In a minority of cases, disorders such as fragile X syndrome, tuberous sclerosis, untreated phenylketonuria (PKU), and congenital
rubella cause autistic behavior. Other disorders, including Tourette syndrome, learning disabilities, and attention deficit disorder, often occur
with autism but do not cause it. While people with schizophrenia may show some autistic-like behavior, their symptoms usually do not
appear until the late teens or early adulthood. Most people with schizophrenia also have hallucinations and delusions, which are not found in
autism.
What role does genetics play?
Recent studies strongly suggest that some people have a genetic predisposition to autism. Scientists estimate that, in families with one
autistic child, the risk of having a second child with the disorder is approximately five percent, or one in 20, which is greater than the risk
for the general population. Researchers are looking for clues about which genes contribute to this increased susceptibility. In some cases,
parents and other relatives of an autistic person show mild social, communicative, or repetitive behaviors that allow them to function
normally but appear linked to autism. Evidence also suggests that some affective, or emotional, disorders occur more frequently than
average in families of people with autism.
Do symptoms of autism change over time?
Symptoms in many children with autism improve with intervention or as the children mature. Some people with autism eventually lead
normal or near-normal lives. About a third of children with autistic spectrum disorders eventually develop epilepsy. The risk is highest in
children with severe cognitive impairment and motor deficits. Adolescence may worsen behavior problems in some children with autism,
who may become depressed or increasingly unmanageable. Parents should be ready to adjust treatment for their child's changing needs.
How can autism be treated?
There is no cure for autism at present. Many times individuals with autism don't want to be "cured" of autism anyways. It is a part of who
they are. Therapies, or interventions, are designed to remedy specific symptoms in each individual. Interventions can equip individuals to
live a fullfilling life with their autism. The best-studied therapies include educational/behavioral and medical interventions. Although these
interventions do not cure autism, they often bring about substantial improvement. Educational/behavioral interventions: These strategies
emphasize highly structured and often intensive skill-oriented training that is tailored to the individual child. Therapists work with children to
help them develop social and language skills. Because children learn most effectively and rapidly when very young, this type of therapy
should begin as early as possible. Recent evidence suggests that early intervention has a good chance of favorably influencing brain
development.
Medication: Doctors may prescribe a variety of drugs to reduce self-injurious behavior or other troublesome symptoms of autism, as well as
associated conditions such as epilepsy and attention disorders. Most of these drugs affect levels of serotonin or other signaling chemicals in
the brain.
Many other interventions are available, but few, if any, scientific studies support their use. These therapies remain controversial and may or
may not reduce a specific person's symptoms. Parents should use caution before subscribing to any particular treatment. Counseling for the
families of people with autism also may assist them in coping with the disorder.
What aspects of autism are being studied?
The NINDS is the Federal Government's leading supporter of biomedical research on brain and nervous system disorders, including
autism. The NINDS conducts research in its laboratories at the National Institutes of Health, in Bethesda, Maryland, and supports research
at other institutions through grants.
NINDS-supported research includes studies aimed at identifying the underlying brain abnormalities of autism through new methods of brain
imaging and other innovative techniques. Researchers also are investigating possible biologic markers present at birth that can identify
infants at risk for the development of autism. Some scientists hope to identify genes that increase the risk of autism. Others are studying
specific aspects of behavior, information processing, and other characteristics to learn precisely how children with autism differ from other
people and how these characteristics change over time. The findings may lead to improved strategies for early diagnosis and intervention.
Related studies are examining how the cerebellum develops and processes information, how different brain regions function in relation to
each other, and how alterations in this relationship during development may result in the signs and symptoms of autism. Researchers hope
this research will provide new clues about how autism develops and how brain abnormalities affect behavior.
| Not just RAINMAN Dustin Hoffman's character Raymond in the 1988 movie was characterized as an "autistic savant" Not all individuals with autism have savant abilities (counting the toothpicks that dropped etc.) Autism is a spectrum disorder that affects each person who is diagnosed with it differently. Rainman is just one of many types of autism and is actually not the most common type even though Rainman is usually the first thing a person thinks of when they hear the word autism. My child has delays are they delays common to the autism spectrum? We are not experts but the founders of this site have helped many parents decide if they need to be concerned about their child. Visit First Signs for more information. When is it autism and not just a kid behaving inappropriatly? Read about Aspergers Syndrome a disorder some refer to as being on the high functioning end of the autism spectrum |
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