Asperger disorder is a form of pervasive developmental disorder characterized by persistent impairment in social interactions, repetitive behavior patterns, and restricted interests. Unlike autistic disorder, no significant aberrations or delays occur in language development or cognitive development. Asperger disorder is generally evident in children older than 3 years and occurs more often in boys.

Children with this disorder often exhibit a limited capacity for spontaneous social interactions, a failure to develop friendships, and a limited number of intense and highly focused interests. Although some people with Asperger disorder may have certain communication problems, including poor nonverbal communication and pedantic speech, many individuals have good cognitive and verbal skills. Bowler and colleagues have reported that, although people with Asperger disorder have fewer memories, the experiences of remembering are qualitatively similar in people with Asperger disorder compared with healthy control subjects.¹ Physical symptoms may include early childhood motor delays, clumsiness, fine motor difficulty, gait anomalies, and odd movements.

Individuals with Asperger disorder have normal or even superior intelligence and may make great intellectual contributions while demonstrating social insensitivity or even apparent indifference toward loved ones. Published case reports of individuals with Asperger disorder suggest an association with the capacity to accomplish cutting-edge research in computer science, mathematics, and physics. Although the deficits manifested by those with Asperger disorder are often debilitating, many individuals experience positive outcomes, especially those who excel in areas not dependent on social interaction.

Persons with Asperger disorder have exhibited outstanding skills in mathematics, music, and computer sciences. Many are highly creative, and many prominent individuals demonstrate traits suggesting Asperger syndrome. For example, biographers describe Albert Einstein as a person with highly developed mathematical skills who was unaware of social norms and insensitive to the emotional needs of family and friends.

Although normal language and cognitive development differentiate Asperger disorder from other developmental disorders, the severe social impairment associated with this condition overlaps with disorders such as high-functioning autism (HFA).

De Spiegeleer and Appelboom (2007) have pointed out that Asperger syndrome is an autism spectrum disorder. For clinical management purposes, Asperger disorder and HFA may be considered together. Impaired social skills are associated with several other conditions (eg, developmental learning disability of the right hemisphere, nonverbal learning disability, schizoid personality disorder, semantic-pragmatic processing disorder, social-emotional learning disabilities).

What Does It Mean to be Autistic

Autism is a brain disorder that too often results in a lifetime of impaired thinking, feeling, and social functioning — our most uniquely human attributes. Autism typically affects a person’s ability to communicate, form relationships with others, and respond appropriately to the external world. The disorder becomes apparent in children generally by the age of 3.

Autism (sometimes referred to as “classical autism”) is the most common condition in a group of developmental disorders known as the autism spectrum disorders.

Other autism spectrum disorders include:

• Childhood disintegrative disorder
• Asperger syndrome
• Rett syndrome
• Pervasive developmental disorder not otherwise specified (usually called PDD-NOS).

Experts estimate that three to six children out of every 1,000 will become autistic. Males are four times more likely to be autistic than females. Autistic girls with tend to have more severe symptoms and greater cognitive impairment.

Common Autistic Behaviors

Autism is characterized by three distinctive behaviors. Autistic children:

• Display problems with verbal and nonverbal communication
• Have difficulties with social interaction
• Exhibit repetitive behaviors or narrow, obsessive interests.

Some autistic people can function at a relatively high level, with speech and intelligence intact. Others have serious cognitive impairments and language delays, and some never speak.

In addition, autistic individuals may seem closed off and shut down, or locked into repetitive behaviors and rigid patterns of thinking. An autistic infant may avoid eye contact, seem deaf, and abruptly stop developing language. The child may act as if unaware of the coming and going of others, or physically attack and injure others without provocation. Autistic infants often remain fixated on a single item or activity, rock or flap their hands, seem insensitive to burns and bruises, and may even mutilate themselves.

The current Diagnosis and Statistical Manual of Mental Disorders-Fourth Edition, Treatment Revision (DSM-IV-TR) identifies three features that are associated with autism:

• impairment in social interaction,
• communication, and
• Behavior.

Impairment in social interaction

First, patients with autism fail to develop normal personal interactions in virtually every setting. This means that affected persons fail to form the normal social contacts that are such an important part of human development. This impairment may be so severe that it even affects the bonding between a mother and an infant. It is important to note that, contrary to popular belief, many, if not most, autistic persons are capable of showing affection and do demonstrate affection and do bond with their mothers or other caregivers. However, the ways in which autistic individuals demonstrate affection and bonding may differ greatly from the ways in which others do so. Their limited socialization may erroneously lead parents and pediatricians away from considering the diagnosis of autism. As the child develops, interaction with others continues to be abnormal. Affected behaviors can include eye contact, facial expressions, and body postures. There is usually an inability to develop normal peer and sibling relationships and the child often seems isolated. There may be little or no joy or interest in normal age-appropriate activities. Affected children or adults do not seek out peers for play or other social interactions. In severe cases, they may not even be aware of the presence of other individuals.

Communication

Communication is usually severely impaired in autistic persons. What the individual understands (receptive language) as well as what is actually spoken by the individual (expressive language) is significantly delayed or nonexistent. Deficits in language comprehension include the inability to understand simple directions, questions, or commands. There may be an absence of dramatic or pretend play and these children may not be able to engage in simple age-appropriate childhood games such as Simon Says or Hide-and-Go-Seek. Adults may continue to engage in playing with games that are for young children.

Autistic individuals who do speak may be unable to initiate or participate in a two-way conversation (reciprocal). Frequently the way in which an autistic person speaks is perceived as unusual. Their speech may seem to lack the normal emotion and sound flat or monotonous. The sentences are often very immature: “want water” instead of “I want some water please.” Those with autism often repeat words or phrases that are spoken to them. For example, you might say “look at the airplane!” and the child or adult may respond “at airplane,” without any knowledge of what was said. This repetition is known as echolalia. Memorization and recitation of songs, stories, commercials, or even entire scripts is not uncommon. While many feel this is a sign of intelligence, the autistic person usually does not appear to understand any of the content in his or her speech.

Autistic persons often exhibit a variety of repetitive, abnormal behaviors. There may also be a hypersensitivity to sensory input through vision, hearing, or touch (tactile). As a result, there may be an extreme intolerance to loud noises or crowds, visual stimulation, or things that are felt. Birthday parties and other celebrations can be disastrous for some of these individuals. Tags on clothing may be perceived as painful. Sticky fingers, playing with modeling clay, eating birthday cake or other foods, or walking barefoot across the grass can be unbearable. On the other hand, there may be an underdeveloped (hyposensitivity) response to the same type of stimulation. This individual may use abnormal means to experience visual, auditory, or tactile (touch) input. This person may head bang, scratch until blood is drawn, scream instead of speaking in a normal tone, or bring everything into close visual range. He or she might also touch an object, image or other people thoroughly just to experience the sensory input.

Autistic children and adults are often tied to routine and many everyday tasks may be ritualistic. Something as simple as a bath may only be accomplished after the precise amount of water is in the tub, the temperature is exact, the same soap is in its assigned spot and even the same towel is in the same place. Any break in the routine can provoke a severe reaction in the individual and place a tremendous strain on the adult trying to work with them.

There may also be non-purposeful repetition of actions or behaviors. Persistent rocking, teeth grinding, hair or finger twirling, hand flapping and walking on tiptoe are not uncommon. Frequently, there is a preoccupation with a very limited interest or a specific plaything. A child or adult may continually play with only one type of toy. The child may line up all the dolls or cars and the adult line up their clothes or toiletries, for example, and repeatedly and systematically perform the same action on each one. Any attempt to disrupt the person may result in extreme reactions on the part of the autistic individual, including tantrums or direct physical attack. Objects that spin, open and close, or perform some other action can hold an extreme fascination. If left alone, an autistic person may sit for hours turning off and on a light switch, twirling a spinning toy, or stacking nesting objects. Some individuals can also have an inappropriate bonding to specific objects and become hysterical without that piece of string, paper clip, or wad of paper.

What is Rett Syndrome

Rett syndrome is a relatively rare condition that almost exclusively affects females. It occurs in one out of every 10,000 to 15,000 people.

Rett syndrome is part of a category of disorders known as pervasive developmental disorders (PDD), which are more commonly known as autism spectrum disorders. All of these disorders are characterized by varying degrees of:

• Impairment in communication skills and social interactions
• Restricted, repetitive, and stereotyped patterns of behavior.

Symptoms of Rett Syndrome

People who develop Rett syndrome initially go through a period of normal development that lasts between 6 and 18 months. After that, autism-like symptoms begin to appear. The little girl’s mental and social development regresses — she no longer responds to her parents and pulls away from any social contact. If she has been talking, she stops; she cannot control her feet; she wrings her hands. Some of the problems associated with Rett syndrome can be treated. Physical, occupational, and speech therapy can help with problems of coordination, movement, and speech.

Causes of Rett Syndrome

Scientists have discovered that a mutation in the sequence of a single gene can cause Rett syndrome. This discovery may help doctors slow or stop the progression of the syndrome. It may also lead to methods of screening for Rett syndrome. This would enable doctors to treat — and thus improve the quality of life of — these children much sooner.