Aug 20, 2021 · Autism spectrum disorders (ASD) are a group of neurodevelopmental diseases. The cause of ASD is unknown, but several genetic and non-genetic risk factors have been characterized that, alone or in combination, are implicated in the development of ASD.

Research suggests that autism spectrum disorder (ASD) develops from a combination of: These factors appear to increase the risk of autism and shape the type of autism that a child will develop. However, it’s important to keep in mind that increased risk is not the same as a cause.

Jan 6, 2018 · Autism spectrum disorder is a condition related to brain development that impacts how a person perceives and socializes with others, causing problems in social interaction and communication. The disorder also includes limited and repetitive patterns of behavior.

Sep 9, 2019 · ASD occurs in all racial, ethnic, and socioeconomic groups, but its diagnosis is far from uniform across these groups. Caucasian children are consistently identified with ASD more often than black or Hispanic children (6).

Jan 17, 2025 · Autism spectrum disorder (ASD) is a neurodevelopmental condition characterized by significant and persistent challenges in social communication, social interaction, and the presence of restricted, repetitive behaviors, interests, or activities.

ASD encompasses a range of neurodevelopmental disorders that last throughout life. Symptoms of ASD include impairments in social skills, including specific repetitive behaviors, as well as abnormal sensory responses. The clinical symptoms of ASD vary among patients.

Mar 2, 2018 · Autism was first described in the 1940s, but very little was known about it until the last few decades. Even today, there is a great deal that we don't know about autism. Because the disorder is so complex and no two people with autism are exactly alike, there are probably many causes for autism.

Aug 20, 2021 · This chapter summarizes the clinical features of ASD, highlights the important genetic and non-genetic risk factors for ASD, and introduces the current knowledge around the pathological processes within and outside the brain.

As ASD is highly heritable, genetic risk factors involved in neurodevelopment, neural communication, and social interaction provide important clues in explaining the etiology of ASD. Accumulated evidence also shows an important role of epigenetic factors, such as DNA methylation, histone modification, and noncoding RNA, in ASD etiology.

Mar 31, 2021 · Many experts believe genes play the biggest role in causing autism. A 2019 study estimated that about 80% of autistic people have it due to genetics. Research has found more than 800 genes linked...