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Report: Autism diagnoses on the rise

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A report, released Thursday, March 27 by the U.S. Centers for Disease Control and Prevention, found that 1 in 68 children had autism. which were not representative of the country as a whole

Autism is almost five times more common in boys than in girls, and also has a higher diagnosis rate in white children. It is also diagnosed more often in white children.

Autism can be spotted as early as age 2, but the average age in the report was between four and five-years-old.

The rates of diagnosis rose 30 percent between 2008 and 2010, and have more than doubled both nationwide. The CDC estimates that 1.2 million people under the age of 21 are on the autism spectrum.

Epidemiologist, Walter Zahorodny at Rutgers New Jersey Medical School who directed New Jersey data-collection for the report, said this would put to rest the argument over whether autism diagnoses are actually increasing.

"It's a true increase," he said. "It's a change of great magnitude. It's silly to go on debating that."

The CDC's Boyle sidestepped the "why" question by saying there is evidence that some of the increase is due to changes in diagnosis without elaborating on what is responsible for the rest of it.

The disorder is characterized by communication problems, obsessional interests, and repetitive movements. Diagnosis is based on symptoms, not a medical test. Symptoms for people who are on the autism spectrum can range from mild to severe.

The official description of autism was changed last year when a new Diagnostic and Statistical Manual of Mental Disorders, the DSM-5, was published. The new CDC report used the old definition. Some autism advocates are concerned that the new definition will reduce the number of children with the diagnosis, leaving fewer kids eligible for special services.

Autism symptoms in teens
Autism symptoms in teens Getty Images

Autism symptoms in teens

 During the teen years, the patterns of behavior often change. Many teens gain skills but still lag behind in their ability to relate to and understand others. Puberty and emerging sexuality may be more difficult for teens who have autism than for others this age. Teens are at an increased risk for developing problems related to depression, anxiety, and epilepsy.

Autism and social interaction
Autism and social interaction Getty Images

Autism and social interaction

Symptoms may include:
Significant problems developing nonverbal communication skills, such as eye-to-eye gazing, facial expressions, and body posture.
Failure to establish friendships with children the same age.
Lack of interest in sharing enjoyment, interests, or achievements with other people.

Autism verbal communication
Autism verbal communication Getty Images

Autism verbal communication

Symptoms may include:
Delay in, or lack of, learning to talk. As many as 40% of people with autism never speak.1
Problems taking steps to start a conversation. Also, people with autism have difficulties continuing a conversation after it has begun.

Autism activities and play
Autism activities and play Getty Images

Autism activities and play

Symptoms may include:
An unusual focus on pieces. Younger children with autism often focus on parts of toys, such as the wheels on a car, rather than playing with the entire toy.
Preoccupation with certain topics. For example, older children and adults may be fascinated by video games, trading cards, or license plates.

Autism in adulthood
Autism in adulthood Getty Images

Autism in adulthood

Some adults with autism are able to work and live on their own. The degree to which an adult with autism can lead an independent life is related to intelligence and ability to communicate. At least 33% are able to achieve at least partial independence.2

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