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Archive for March, 2009

Autism – Causes and Symptoms

Autism is a disorder that is usually first diagnosed in early childhood. Children with autism might have problems talking with you, or they might not look you in the eye when you talk to them. Autism is a complex developmental disability that typically appears during the first three years of life and affects a person’s ability to communicate and interact with others. Autism is defined by a certain set of behaviors and is a “spectrum disorder” that affects individuals differently and to varying degrees.

What Causes Autism?

No one really knows for sure what causes autism.  For many people, this uncertainty is terribly frustrating. Given the complexity of the disease, the range of autistic disorders and the fact that no two children with autism are alike, it’s probable that there are many causes. These may include:

  • Genetic errors. Researchers have discovered a number of genes that appear to be involved in autism. Some may make a child more susceptible to the disorder; others affect brain development or the way brain cells communicate. Still others may determine the severity of symptoms. Each genetic error may account for a small number of cases, but taken together, the influence of genes may be substantial. Some genetic errors seem to be inherited, whereas others occur spontaneously.
  • Environmental factors. Many health problems are due to both genetic and environmental factors, and this is likely the case with autism as well. Researchers are currently exploring whether viral infections and air pollutants, for instance, play a role in triggering autism.
  • Other causes. Other factors under investigation include problems during labor and delivery and the role of the immune system in autism. Some researchers believe that damage to the amygdala — a portion of the brain that serves as a danger detector — may play a role in autism.

One of the greatest controversies in autism centers on whether a link exists between autism and certain childhood vaccines, particularly the measles-mumps-rubella (MMR) vaccine and vaccines with thimerosal, a preservative that contains a small amount of mercury. Though most children’s vaccines have been free of thimerosal since 2001, the controversy continues. To date, extensive studies have found no link between autism and vaccines.

Autism Symptoms.

Children with autism generally have problems in three crucial areas of development — social interaction, language and behavior. But because the symptoms of autism vary greatly, two children with the same diagnosis may act quite differently and have strikingly different skills. In most cases, though, the most severe autism is marked by a complete inability to communicate or interact with other people.

Many children show signs of autism in early infancy. Other children may develop normally for the first few months or years of life but then suddenly become withdrawn, aggressive or lose language skills they’ve already acquired. Though each child with autism is likely to have a unique pattern of behavior, these characteristics are common signs of the disorder:

Social skills

  • Fails to respond to his or her name
  • Has poor eye contact
  • Appears not to hear you at times
  • Resists cuddling and holding
  • Appears unaware of others’ feelings
  • Seems to prefer playing alone — retreats into his or her “own world”

Language

  • Starts talking later than other children
  • Loses previously acquired ability to say words or sentences
  • Does not make eye contact when making requests
  • Speaks with an abnormal tone or rhythm — may use a singsong voice or robot-like speech
  • Can’t start a conversation or keep one going
  • May repeat words or phrases verbatim, but doesn’t understand how to use them

Behavior

  • Performs repetitive movements, such as rocking, spinning or hand-flapping
  • Develops specific routines or rituals
  • Becomes disturbed at the slightest change in routines or rituals
  • Moves constantly
  • May be fascinated by parts of an object, such as the spinning wheels of a toy car
  • May be unusually sensitive to light, sound and touch and yet oblivious to pain

Young children with autism also have a hard time sharing experiences with others. When read to, for example, they’re unlikely to point at pictures in the book. This early-developing social skill is crucial to later language and social development.

As they mature, some children with autism become more engaged with others and show less marked disturbances in behavior. Some, usually those with the least severe problems, eventually may lead normal or near-normal lives. Others, however, continue to have great difficulty with language or social skills, and the adolescent years can mean a worsening of behavior problems.

The majority of children with autism are slow to acquire new knowledge or skills and some have signs of lower than normal intelligence. Other children with autism have normal to high intelligence. These children learn quickly yet have trouble communicating, applying what they know in everyday life and adjusting in social situations. An extremely small number of children with autism are “autistic savants” and have exceptional skills in a specific area, such as art, math or music.

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What is Autism?

Autism is a general term that is used to cover a number of disorders known as Autism Spectrum disorders. These disorders affect the ones that have them in their interaction and communication with others. Autism can affect anyone, no matter what age, sex, or race they are, and at the moment millions of people, both children and adults are suffering from one form of autism or another throughout the world. If one member of the family has one of the Autism Spectrum Disorders then the whole family will feel the repercussions, financial and social problems will occur and furthermore, it is a great chance that the children of the person who has Autism will also have it because it is transmitted genetically to the ancestors.

Children with autism don’t understand what the others are saying, cannot interact with other children and cannot play with them. The affection seriously affects the behavior, some of the patients developed an aggressive defense against anyone who tried to communicate with them, others appeared to develop a special sensitivity to the environment and its changes.

How can autism be detected, does it have any specific symptoms? Well, it’s up to the family and the ones around someone with autism spectrum disorders to discover his/her condition. In the children’s case the family or the teacher should be the first to notice that a child has a different behavior. These are the signs that can make you suspect a child of autism:
-the child starts to speak at an older age, later than the other children
-he focuses on one single object for hours sometimes
-he can speak words, but until the age of 2-3 years old he does not say a sentence with more than one word in it
-some of the children with autism spectrum disorders don’t even respond to their own name when it is called
-the general behavior of the child indicates that he is withdrawn, indifferent and lonely.

However, if you or your child are diagnosed as being on the autism spectrum, then you will have one of five types of autism spectrum disorder:-

  • Asperger Syndrome
  • Childhood Disintegrative Disorder
  • PDD-NOS or Pervasive Developmental Disorder (Not Otherwise Specified)
  • Rett Syndrome
  • Autism – Also referred to as SLD Autism or Kanner’s Syndrome

Sufferers of each of these five autism spectrum disorders share a “triad of impairments”, or three common characteristics, though with varying degrees. All three of these common impairments are to do with socialization and social skills.

# The Triad Of Impairments

1) Difficulty with Interaction

All autistic people have some difficulty interacting with those around them. This impairment covers problems making friends and “fitting in”, difficulty mixing with their peers, problems understanding social rules and the rules of conversation, and not picking up on other people’s feelings or showing their own in an inappropriate manner.

2) Difficulty with Social Imagination

This second impairment is to do with empathy and understanding consequences. An autistic person many have problems understanding the feelings and actions of other, coping with change, planning for the future, coping with new situations and experiences, understanding risks and dangers, and playing imaginatively.

3) Difficulty Communicating

All autistic people have some degree of difficulty either with communicating or with understanding communication. Some sufferers will have problems with speech, some will not understand the different ways people communicate – gestures, body language and facial expressions, others will take things that people say quite literally and not understand jokes or sarcasm, and some just will not understand how conversation works and will interrupt or change the subject.

# Other Common Characteristics

Although there are only three characteristics which are common to all of the autism spectrum disorders, some of them do share other characteristics and difficulties:-

  • Sensory sensitivity – Many parents report that their autistic children are either hypersensitive or hyposensitive. Hypersensitivity is when a child is over-sensitive to touch, tastes, noises and smells. Hyposensitivity is the complete opposite and may mean that a child has problems with fine motor skills, like doing up buttons, and may not be able to feel pain.
  • Obsessions – It is common for many autistic children to become “fixated” on a certain hobby or interest.
  • Learning disabilities – Some autistic children have learning problems and may need special support at school. Some autistic people also have problems like dyspraxia, dyslexia or ADHD.
  • A need for fixed rules and routine – As I have said, it is common for autistic people to have problems coping with change and new experiences. An autistic child may cope better if they have a predictable daily routine.
  • Problems with daily chores and actions – Things that the rest of us take for granted, like brushing our teeth, washing and making our beds, may be difficult for an autistic child or adult to remember and do.
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