Many young children have so-called temper tantrums at one time or another in their lives.
This type of behavior may continue for years in children with autism. Children with autism have perfectly normal appearances. They usually do not have any distinguishing features or characteristics that would make them appear different from any other child. Their behavior might be the only thing about them that makes them seem different. People who witness a tantrum tend to make judgments on tantrum behaviors, often without anything to base their judgments on other than their own personal experiences.