NEW YORK, May 31 — New US research has shown that during early childhood, children with autism may experience a reduction in their symptoms.
Carried out by researchers at the University of California Davis, the new study looked at 89 boys and 36 girls with autism spectrum disorder (ASD). The researchers used a 10-point measure derived from the Autism Diagnostic Observation Schedule (ADOS), which is considered to be the gold standard assessment tool in autism research, to measure the severity of the children’s autism symptoms
The team looked at a change in the severity score for the children between the ages of three and six and classified them into groups based on their severity change score, with a change of two points or more considered to be a significant change in symptom severity.
The findings, published in the Journal of Autism and Developmental Disorders, showed that not only can children’s symptom severity can change with age, but they can also improve and get better, with 28.8 per cent of the children placed into a Decreased Severity Group. However, 16.8 per cent were placed in an Increased Severity Group, and the remaining 54.4 per cent of the children were placed in a Stable Severity Group.
“We found that nearly 30 per cent of young children have less severe autism symptoms at age 6 than they did at age 3. In some cases, children lost their autism diagnoses entirely,” said David Amaral, senior author on the study.
“It is also true that some children appear to get worse,” Amaral said. “Unfortunately, it is not currently possible to predict who will do well and who will develop more severe autism symptoms and need different interventions.”
In addition, the researchers also found that girls with autism show a bigger decrease in severity than boys, and also a lower increase in severity during early childhood, which the researchers say may be due to girls being able to hide their symptoms better, a coping strategy which is more common among females diagnosed with ASD than males with ASD across different age ranges, including adulthood.
“The fact that more of the girls appear to have decreased in autism severity may be due to an increasing number of girls compared to boys who, with age, have learned how to mask their symptoms,” said Einat Waizbard-Bartov, the first author of the paper.
Early childhood is a period of substantial brain growth with critical ability for learning and development. It also is the typical time for an initial diagnosis of autism and the best time for early intervention. In the US, about 1 in 54 children has been identified with autism spectrum disorder (ASD), with four times as many boys with ASD as girls.
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