Autism, or autism spectrum disorder (ASD), is a developmental disability caused by differences in the brain. It is a spectrum disorder, which means that it affects individuals differently and to varying degrees. Some people with ASD have a known difference, such as a genetic mutation, while others do not.

ASD is characterized by challenges with social skills, communication, and behavior. People with ASD often have problems with social interaction, such as difficulty making eye contact, understanding social cues, and making friends. They may also have repetitive behaviors or routines, such as lining up toys or repeating phrases. Some individuals with ASD may have sensory sensitivities, such as being bothered by certain sounds or textures.

It is important to note that there is no one type of autism, but many. The symptoms and severity of ASD can vary widely, and early diagnosis and intervention can greatly improve outcomes for individuals with ASD.