Symptoms/behaviors of ASDs can range from mild to severe, and may seem to appear gradually or suddenly. Atypical development may be observed from birth, or more commonly, become noticeable during the 12- to 36-month period. Symptoms may inculde communication difficulties, repetitive behaviors, sensory difficulties and unusual abilities.
Autistic disorder, commonly referred to as autism, is the most prevalent ASD and severely impairs a child’s social interaction and communication abilities.
ASDs are usually evident by the age of 3, though diagnosis may be made as early as 12 to 18 months, and as late as 4 to 6 years (or later). According to the Center for Disease Control (CDC), about 1 in 59 children have an autism spectrum disorder. ASDs are three to four times more common in boys than in girls. However, girls with these disorders tend to have more severe symptoms and lower intelligence. Some children will need ongoing supervision, while others, with the right support, may pursue higher education and fulfilling jobs. These disorders affect people of all racial, ethnic and socioeconomic groups.
Asperger's Syndrome is the second most common ASD and is a milder form of autism. Children with Asperger’s Syndrome exhibit higher language development than children with autism and often have normal intellectual ability combined with a disinterest in social communication. Children with Asperger’s may not initiate or sustain a conversation and do not compensate for their limited language by using nonverbal means of communication, thus limiting their peer relationships. Similar to autism, children with Asperger’s do not share enjoyment or interests with others
To date, no biological diagnostic tests exist that detect autism. But scientists are hopeful that advanced imaging techniques and differences in blood levels of proteins in autistic versus normal children may have implications for diagnosis. Already, improved diagnostic procedures have allowed clinicians to diagnose children at a younger age.
Formal diagnosis involves parental input and structured and systematic screening instruments, such as the Modified Checklist for Autism in Toddlers (M-CHAT) and the Autism Behavioral Checklist (ABC) for older children. The Childhood Autism Rating Scale (CARS) and the Autism Diagnostic Inventory-Revised (ADI-R) are used, as well. These tools measure the prevalence of symptoms. Symptoms may be present from birth, or may occur after months of normal development. However, no two children with these disorders behave the same way. Children as young as 18 months may be diagnosed, but have different clinical features than an older child with autism.
Copyright © 2018 AZ Solar Help - All Rights Reserved.