Today we are celebrating World Autism Day at St. Paul's Episcopal Nursery School. We have joined Autism Speaks in helping to raise awareness of this complex class of brain disorders by wearing blue and sharing information. Below is information defining Autism, its prevalence
What
Is Autism? What is Autism Spectrum Disorder?
Autism spectrum disorder (ASD)
and autism are both general terms for a group of complex disorders of brain
development. These disorders are characterized, in varying degrees, by
difficulties in social interaction, verbal and nonverbal communication and
repetitive behaviors. They include autistic disorder, Rett syndrome, childhood dis-integrative disorder, pervasive developmental disorder-not otherwise
specified (PDD-NOS) and Asperger syndrome. With the May 2013 publication of the
new DSM-5
diagnostic manual, these autism subtypes will be merged into one
umbrella diagnosis of ASD.
ASD can be associated with intellectual
disability, difficulties in motor coordination and attention and physical
health issues such as sleep and gastrointestinal disturbances. Some persons
with ASD excel in visual skills, music, math and art.
Autism appears to have its roots in
very early brain development. However, the most obvious signs of autism and
symptoms of autism tend to emerge between 2 and 3 years of age.
How
Common Is Autism?
Autism statistics from the U.S. Centers
for Disease Control and Prevention (CDC) identify around 1 in 88 American
children as on the autism spectrum–a ten-fold increase in prevalence in 40
years. Careful research shows that this increase is only partly explained by
improved diagnosis and awareness. Studies also show that autism is four to five
times more common among boys than girls. An estimated 1 out of 54 boys and 1 in
252 girls are diagnosed with autism in the United States.
By way of comparison, more children are
diagnosed with autism each year than with juvenile diabetes, AIDS or cancer,
combined. ASD affects over 2 million individuals in the U.S. and tens of
millions worldwide. Moreover, government autism statistics suggest that
prevalence rates have increased 10 to 17 percent annually in recent years.
There is no established explanation for this continuing increase, although
improved diagnosis and environmental influences are two reasons often
considered.
What
Causes Autism?
Not long ago, the answer to this
question would have been “we have no idea.” Research is now delivering the
answers. First and foremost, we now know that there is no one cause of autism
just as there is no one type of autism. Over the last five years, scientists
have identified a number of rare gene changes, or mutations, associated with
autism. A small number of these are sufficient to cause autism by themselves.
Most cases of autism, however, appear to be caused by a combination of autism
risk genes and environmental factors influencing early brain development.
In the presence of a genetic
predisposition to autism, a number of non-genetic, or “environmental,” stresses
appear to further increase a child’s risk. The clearest evidence of these
autism risk factors involves events before and during birth. They include
advanced parental age at time of conception (both mom and dad), maternal
illness during pregnancy and certain difficulties during birth, particularly
those involving periods of oxygen deprivation to the baby’s brain. It is
important to keep in mind that these factors, by themselves, do not cause
autism. Rather, in combination with genetic risk factors, they appear to
modestly increase risk.
A growing body of research suggests
that a woman can reduce her risk of having a child with autism by taking
prenatal vitamins containing folic acid and/or eating a diet rich in folic acid
(at least 600 mcg a day) during the months before and after conception. Increasingly, researchers are looking
at the role of the immune system in autism.
What
Does It Mean to Be “On the Spectrum”?
Each individual with autism is
unique. Many of those on the autism spectrum have exceptional abilities in
visual skills, music and academic skills. About 40 percent have average to
above average intellectual abilities. Indeed, many persons on the spectrum take
deserved pride in their distinctive abilities and “atypical” ways of viewing
the world. Others with autism have significant disability and are unable to
live independently. About 25 percent of individuals with ASD are nonverbal but
can learn to communicate using other means. Autism Speaks’ mission is to
improve the lives of all those on the autism spectrum. For some, this means the
development and delivery of more effective treatments that can address
significant challenges in communication and physical health. For others, it
means increasing acceptance, respect and support.
The following red flags may indicate a child
is at risk for an autism spectrum disorder, and is in need of an immediate
evaluation.
In clinical terms, there are a few “absolute
indicators,” often referred to as “red flags,” that indicate that a child
should be evaluated. For a parent, these are the “red flags” that your child
should be screened to ensure that he/she is on the right developmental path.
Red Flags of Autism Spectrum Disorders:
If your baby shows two or more of these signs,
please ask your pediatric health care provider for an immediate evaluation.
Impairment in Social Interaction:
- Lack of appropriate eye gaze
- Lack of warm, joyful expressions
- Lack of sharing interest or enjoyment
- Lack of response to name
Impairment in Communication:
- Lack of showing gestures
- Lack of coordination of nonverbal communication
- Unusual prosody (little variation
in pitch, odd intonation, irregular rhythm,
unusual voice quality)
Repetitive Behaviors & Restricted
Interests:
- Repetitive movements with objects
- Repetitive movements or posturing of body, arms, hands, or fingers
For local resources, please visit the following websites:
For more national information please visit the following websites:
Wetherby, A., Woods, J., Allen, L., Cleary, J., Dickinson,
H., & Lord, C. (2004). Early indicators of autism spectrum disorders in the
second year of life. Journal of Autism and Developmental Disorders, 34,
473-493. Based on research at the Florida State University FIRST
WORDS® Project.
"What is Autism?." www.autismspeaks.org. Autism Speaks, n.d. Web. 2 Apr 2013. <http://www.autismspeaks.org/what-autism>.










