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Showing posts with the label Rett syndrome and Pervasive Development Disorder Not Otherwise Specified

What causes sleep disorders in children with autism?

Researchers don't know for sure why autistic children have problems with sleep, but they have several theories. The first has to do with social cues. People know when it's time to go to sleep at night, thanks to the normal cycles of light and dark and the body's circadian rhythms. But they also use social cues. For example, children may see their siblings getting ready for bed. Children with autism, who often have difficulty communicating, may misinterpret or fail to understand these cues. Another theory has to do with the hormone melatonin , which normally helps regulate sleep-wake cycles. To make melatonin, the body needs an amino acid called tryptophan, which research has found to be either higher or lower than normal in children with autism. Typically, melatonin levels rise in response to darkness (at night) and dip during the daylight hours. Studies have shown that some children with autism don't release melatonin at the correct times of day. Instead...

Pervasive Development Disorder

A Pervasive Developmental Disorder is used as an umbrella term for all of the following related disorders: Autism, Asperger's Syndrome, Childhood Disintegrative Disorder, Rett syndrome and Pervasive Development Disorder Not Otherwise Specified, or PDD-NOS, for short. All of these disorders differ slightly but share the very general common characteristics which lead to  difficulty in socializing with others, repetitive behaviors, and heightened sensitivities to certain stimuli. This article will focus on the PDD-NOS Pervasive Developmental Disorder since that is what most people mean to refer to even if they unintentionally leave the last -NOS out of the term. Individuals with PDD-NOS behave similarly to those with classic autism in many ways. Firstly, it's important to understand that one person affected with PPD-NOS will not act exactly like the next person who is affected with the same disorder (as is the case for autism) so it's important to recognize that you are dealin...