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Autism Spectrum Disorders Health Center

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High-Functioning Autism and Asperger's Syndrome

Autism is a brain disorder in which communication and interaction with others are difficult. The symptoms of autism may range from total lack of communication with others to difficulty in understanding others' feelings. Because of the range of symptoms, this condition is now called autism spectrum disorder (ASD).

High-functioning autism (HFA) is at one end of the ASD spectrum. Signs and symptoms are less severe than with other forms of autism. In fact, a person with high-functioning autism usually has average or above-average intelligence. The differences from other forms of autism have led many psychiatrists to consider high-functioning autism as similar to or the same as Asperger's syndrome. However, usually children with HFA have language delays early on like other children with autism. Children with Asperger’s, though, don’t show classic language delays until they have enough spoken language to assess language difficulties.

Recommended Related to Autism

Gluten-Free/Casein-Free Diets for Autism

Autism spectrum disorders (ASD) are developmental disorders that affect children by disrupting their ability to communicate and interact socially. To reduce a child's symptoms of autism, parents often try alternative treatments such as specialized diets. Lately, the gluten-free/casein-free diet has grown in popularity. Some parents report improvements in autism symptoms with this dietary regimen. Little research has been done, though, on the gluten-free/casein-free diet for autism. Consequently,...

Read the Gluten-Free/Casein-Free Diets for Autism article > >

Whether it's labeled high-functioning autism or Asperger's syndrome, coping with this condition presents daily challenges for those who have it and for their family and friends.

What Are the Symptoms of High-Functioning Autism and Asperger's Syndrome?

Other than the difference in their language development, people with high-functioning autism and people with Asperger's syndrome share many similar characteristics. They typically have average or above-average intelligence. They may, though, show other behaviors and signs similar to what's seen with other types of autism. These include:

  • A delay in motor skills
  • A lack of skill in interacting with others
  • Little understanding of the abstract uses of language, such as humor or give-and-take in a conversation
  • Obsessive interest in specific items or information
  • Strong reactions to textures, smells, sounds, sights, or other stimuli that others might not even notice, such as a flickering light

Unlike people with other forms of autism, people with high-functioning autism or Asperger's syndrome want to be involved with others. They simply don't know how to go about it. They may not be able to understand others' emotions. They may not read facial expressions or body language well. As a result, they may be teased and often feel like social outcasts. The unwanted social isolation can lead to anxiety and depression.

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