basics [autism & vitamin d]

8/12/2019 Basics [Autism & Vitamin D]

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GCRL1000 Group Project Saturday, 15 March 2014Autism Basics

- Autism Spectrum Disorders (ASDs) are developmental disabilities which lead to affected people havingsocial, communication, and behavioural challenges people with ASDs handle information in their braindifferent to other people ("Facts About ASDs," 2013)

- ASDs are spectrum disorders, meaning that they effect different people in different ways and to differentdegrees of severity

-There are three main types of ASDs:

Autistic Disorder (Classic Autism)

This is what most people think of when hearing the word "autism." People with autistic disorder usuallyhave significant language delays, social and communication challenges, and unusual behaviors andinterests. Many people with autistic disorder also have intellectual disability.

Asperger Syndrome

People with Asperger syndrome usually have some milder symptoms of autistic disorder. They mighthave social challenges and unusual behaviours and interests. However, they typically do not haveproblems with language or intellectual disability.

Pervasive Developmental Disorder (Not Otherwise Specified)

(PDD-NOS; also called "atypical autism")

People who meet some of the criteria for autistic disorder or Asperger syndrome, but not all, may bediagnosed with PDD-NOS. People with PDD-NOS usually have fewer and milder symptoms than those withautistic disorder. The symptoms might cause only social and communication challenges.

Symptoms and Diagnosis

ASDs begin before the age of 3 and last throughout a person's life, although symptoms may improve over time.Some children with an ASD show hints of future problems within the first few months of life. In others,symptoms might not show up until 24 months or later. Some children with an ASD seem to develop normallyuntil around 18 to 24 months of age and then they stop gaining new skills, or they lose the skills they once had.

A person with an ASD might:

Not respond to their name by 12 months

Not point at objects to show interest (point at an airplane flying over) by 14 months

Not play "pretend" games (pretend to "feed" a doll) by 18 months

Avoid eye contact and want to be alone

Have trouble understanding other people's feelings or talking about their own feelings

Have delayed speech and language skills

Repeat words or phrases over and over (echolalia)

Give unrelated answers to questions

Get upset by minor changes

Have obsessive interests

Flap their hands, rock their body, or spin in circles

Have unusual reactions to the way things sound, smell, taste, look, or feel

Diagnosing ASDs can be difficult since there is no medical test, like a blood test, to diagnose the disorders.Doctors look at the childs behaviour and development to make a diagnosis. ASDs can sometimes be detectedat 18 months or younger. By age 2, a diagnosis by an experienced professional can be considered very reliable(Lord, 2006). However, many children do not receive a final diagnosis until much older. This delay means thatchildren with an ASD might not get the help they need.

Causes and Risk Factors

We do not know all of the causes of ASDs. However, we have learned that there are likely many causes formultiple types of ASDs. There may be many different factors that make a child more likely to have an ASD,including environmental, biologic and genetic factors.

Most scientists agree that genes are one of the risk factors that can make a person more likely to developan ASD.

Children who have a sibling or parent with an ASD are at a higher risk of also having an ASD.

ASDs tend to occur more often in people who have certain genetic or chromosomal conditions. About 10%of children with ASDs also have been identified as having Down syndrome, fragile X syndrome, tuberous

sclerosis, or other genetic and chromosomal disorders.


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GCRL1000 Group Project Saturday, 15 March 2014 When taken during pregnancy, the prescription drugs valproic acid and thalidomide have been linked with a

higher risk of ASDs.

We know that the once common belief that poor parenting practices cause ASDs is not true.

There is some evidence that the critical period for developing ASDs occurs before birth. However, concernsabout vaccines and infections have led researchers to consider risk factors before and after birth.

A small percentage of children who are born prematurely or with low birthweight are at greater risk for

having ASDs.

Statistics

(U.S. Center for Disease Control and Prevention, 2013)ASDs occur in all racial, ethnic, and socioeconomic groups, but are almost five times more common among

boys than among girls. The CDC estimates that about 1 in 88 children has been identified with an autismspectrum disorder in the United States (Baio, 2012). More people than ever before are being diagnosed with anASD. It is unclear exactly how much of this increase is due to a broader definition of ASDs and better efforts indiagnosis. However, a true increase in the number of people with an ASD cannot be ruled out. It is believed theincrease in ASD diagnosis is likely due to a combination of these factors: Studies have shown that among identical twins, if one child has an ASD, then the other will be affected

about 36-95% of the time. In non-identical twins, if one child has an ASD, then the other is affected about 0-31% of the time (Rosenberg et al., 2009).

Parents who have a child with an ASD have a 2%18% chance of having a second child who is also affected(Sumi, Taniai, Miyachi, & Tanemura, 2006).

ASDs tend to occur more often in people who have certain genetic or chromosomal conditions. About 10%of children with autism are also identified as having Down syndrome, fragile X syndrome, tuberoussclerosis, and other genetic and chromosomal disorders (DiGuiseppi et al., 2010).

Individuals with an ASD had average medical expenditures that exceeded those without an ASD by $4,110

$6,200 per year. On average, medical expenditures for individuals with an ASD were 4.1

6.2 times greaterthan for those without an ASD. Differences in median expenditures ranged from $2,240 to $3,360 per yearwith median expenditures 8.49.5 times greater (Amendah, Grosse, Peacock, & Mandell, 2011).

In 2005, the average annual medical costs for Medicaid-enrolled children with an ASD were $10,709 perchild, which was about six times higher than costs for children without an ASD ($1,812).

Global statistics:http://www.cdc.gov/ncbddd/autism/documents/asd_prevalence table 2013. df

Good resource for finding articles:http://www.cdc.gov/ncbddd/autism/articles.html
http://www.cdc.gov/ncbddd/autism/documents/asd_prevalence_table_2013.pdfhttp://www.cdc.gov/ncbddd/autism/documents/asd_prevalence_table_2013.pdfhttp://www.cdc.gov/ncbddd/autism/documents/asd_prevalence_table_2013.pdfhttp://www.cdc.gov/ncbddd/autism/articles.htmlhttp://www.cdc.gov/ncbddd/autism/articles.htmlhttp://www.cdc.gov/ncbddd/autism/articles.htmlhttp://www.cdc.gov/ncbddd/autism/documents/asd_prevalence_table_2013.pdfhttp://www.cdc.gov/ncbddd/autism/documents/asd_prevalence_table_2013.pdf


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GCRL1000 Group Project Saturday, 15 March 2014 In addition to medical costs, intensive behavioural interventions for children with ASDs cost $40,000 to

$60,000 per child per year.


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GCRL1000 Group Project Saturday, 15 March 2014Bibliography

Amendah, D., Grosse, S. D., Peacock, G., & Mandell, D. S. (2011). Autism Spectrum Disorders: Oxford University Press.

Baio, J. (2012). Prevalence of Autism Spectrum Disorders. Morbidity and Mortality Weekly Report (MMWR), 61(3), 1-19.

DiGuiseppi, C., Hepburn, S., Davis, J. M., Fidler, D. J., Hartway, S., Lee, N. R., . . . Robinson, C. (2010). Screening forautism spectrum disorders in children with Down syndrome. Journal of Developmental & Behavioral Pediatrics.

Facts About ASDs. (2013, 20/12/13). from http://www.cdc.gov/ncbddd/autism/facts.html

Lord, C. R., Susan; DiLavore, Pamela S.; Shulman, Cory; Thurm, Audrey; Pickles, Andrew. (2006). Autism From 2 to 9Years of Age. Archives of General Psychiatry, 63(6), 694-701.

Rosenberg, R. E., Law, J. K., Yenokyan, G., McGready, J., Kaufmann, W. E., & Law, P. A. (2009). Characterisitics andconcordance of autism spectrum disorders among 277 twin pairs. Archive of Pediatric Adolescent Medicine,163(10), 907-914.

Sumi, S., Taniai, H., Miyachi, T., & Tanemura, M. (2006). Sibling risk of pervasive developmental disorder estimated bymeans of an epidemiologic survey in Nagoya, Japan. Journal of Human Genetics, 51, 518-522.

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