Autism is a neurological developmental disability caused by differences in the brain. It is a group of neurological and developmental conditions that affect how a person communicates, interacts with others, and experiences the world. Autism is considered a disability from a medical and legal standpoint. However, not everyone with autism identifies as being disabled. The degree of disability will depend on the type and severity of the symptoms. Some people with autism may have co-conditions, including different types of disabilities.