There is no known single cause for autism spectrum disorder, but it is generally accepted that it is caused by abnormalities in brain structure or function. Brain scans show differences in the shape and structure of the brain in children with autism compared to in neurotypical children.
Thereof, what are the 3 main symptoms of autism?
Participating in conversation is difficult. Trouble connecting with others’ thoughts or feelings. Difficulty reading others’ body language and facial expressions well, for example, the person might be unable to comprehend if a person is happy or sad. Unable to understand sarcastic or emotive undertones.
Besides, who is at high risk for autism?
Children born to older parents are at a higher risk for having autism. Parents who have a child with ASD have a 2 to 18 percent chance of having a second child who is also affected. Studies have shown that among identical twins, if one child has autism, the other will be affected about 36 to 95 percent of the time.