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in most cases after even very extensive testing no specific medical cause for the condition is found. As with autism, children who suffer from this condition are at increased risk for seizures.

evidence suggest that it arises as a result of some form of central nervous system pathology.

Childhood disintegrative disorder is perhaps 10 times less common than more strictly defined autism

Facilitated Communication therapy began in Australia with Rosemary Crossley. The center for FC in the United States is Syracuse University, which houses the Facilitated Communication Institute (FCI) in their School of Education.

A very damaging, detailed criticism was presented on PBS's "Frontline", October 19, 1993. The program was repeated December 17, 1996, and added that since the first showing, Syracuse University has claimed to have done three studies which verify the reality and effectiveness of FC, while thirty other studies done elsewhere have concluded just the opposite.

Furthermore, FC clients routinely use a flat board or keyboard, over which the facilitator holds their pointing finger. Even the most expert typist could not routinely hit correct letters without some reference as a starting point.

Facilitators routinely look at the keyboard; clients do not. The messages' basic coherence indicates that they most probably are produced by someone who is looking at the keyboard.

Anyone familiar with Helen Keller, Stephen Hawking or Christy Brown knows that blindness, deafness, cerebral palsy, multiple sclerosis, amyotrophic lateral sclerosis (ALS), or physical or neurological disorders, do not necessarily affect the intellect. There is no necessary connection between a physical handicap and a mental handicap. We also know that such people often require an assistant to facilitate their communication. But what facilitators do to help the likes of a Hawking or a Brown is a far cry from what those in the facilitated communication business are doing.

But the vast majority of FC clients apparently are mentally retarded or autistic. Their facilitators appear to be reporting their own thoughts, not their patient's thoughts. Interestingly, the facilitators are genuinely shocked when they discover that they are not really communicating their patient's thoughts. Their reaction is similar to that of dowsers and others with "special powers" who, when tested under controlled conditions, find they don't have any special powers at all.

It is interesting that the parents and other loved ones who have been bonding with the patient for years are unable to be facilitators with their own children.

And when the kind strangers and their patients are put to the test, they generally fail. We are told that is because the conditions made them nervous. These ad hoc excuses sound familiar; they sound like the complaints of parapsychologists.

Skeptics think the evidence is in and FC is a delusion for the most part. It is also a dangerous delusion. Critics have noted a similarity between FC therapy and repressed memory therapy: patients are accusing their parents and others of having sexually abused them. Facilitators are taught that something like 13% of their clients have been sexually abused. This information may unconsciously influence their work.

Einstein researchers contend that scientific evidence directly points to the locus coeruleus–noradrenergic (LC-NA) system as being involved in autism. “The LC-NA system is the only brain system involved both in producing fever and controlling behavior,” says co-author Dominick P. Purpura, M.D., dean emeritus and distinguished professor of neuroscience at Einstein.

The locus coeruleus has widespread connections to brain regions that process sensory information.

It is also involved in a variety of complex behaviors, such as attentional focusing (the ability to concentrate attention on environmental cues relevant to the task in hand, or to switch attention from one task to another).

“What is unique about the locus coeruleus is that it activates almost all higher-order brain centers that are involved in complex cognitive tasks,” says Dr. Mehler.

Drs. Purpura and Mehler hypothesize that in autism, the LC-NA system is dysregulated by the interplay of environment, genetic, and epigenetic factors (chemical substances both within as well as outside the genome that regulate the expression of genes). They believe that stress plays a central role in dysregulation of the LC-NA system, especially in the latter stages of prenatal development when the fetal brain is particularly vulnerable.

Drs. Purpura and Mehler believe that, in autistic children, fever stimulates the LC-NA system, temporarily restoring its normal regulatory function.

the future of autism treatment probably lies in drugs that selectively target certain types of noradrenergic brain receptors or, more likely, in epigenetic therapies targeting genes of the LC-NA system.

“You can’t take a complex neuropsychiatric disease that has escaped our understanding for 50 years and in one fell swoop have a therapy that is going to reverse it — that’s folly. On the other hand, we now have clues to the neurobiology, the genetics, and the epigenetics of autism. To move forward, we need to invest more money in basic science to look at the genome and the epigenome in a more focused way.”

The exclusion by autism self advocates of the intellectually disabled autistic population occurs despite the fact that many persons with Autistic Disorder are intellectually disabled. The ICD-10 mentions this fact expressly in its description of Autistic Disorder:

Autistic Disorder...In addition to these specific diagnostic features, it is frequent for children with autism to show a range of other nonspecific problems such as fear/phobias, sleeping and eating disturbances, temper tantrums, and aggression. Self-injury (e.g. by wrist-biting) is fairly common, especially when there is associated severe mental retardation.

All levels of IQ can occur in association with autism, but there is significant mental retardation in some three-quarters of cases.

There are more than 200 known causes of intellectual disability. Some common examples of intellectual disability are: Down syndrome Autism

The attempt by higher functioning persons with ASD's and Aspergers to disassociate "autism" from intellectual disability helps stigmatize persons with intellectual disabilities including the many persons with autistic disorder and intellectual disabilities.

And some ND's, to counter the fact that most with LFA are retarded, some "famous" autistics like to promote FC as "proof" that they aren't.

My cousin is profoundly autistic. He is around 20 and cannot communicate at all, not verbally or in the written word, and has never said a word. Luckily, his family is smart enough to know that if anyone tries use FC on him they will know it is a scam.If a facilitator told my aunt that P was writing poems and understood Shakespeare she would just laugh. She loves P as he is; she knows reality and doesn't try to force him to be someone he isn't.

The current Wikipedia article still shows a frequency of 25-70% incidence of mental retardation in people with autism.

Yet, the reader is drawn to see not the high percentage (25% is still very high) but the width of the range, therefore there must be something wrong with the ability of standard tests to measure "autistic intelligence".

Mentally retarded IMO comes from the intelligence scales. These do not address the learning styles of all people and are inflexible. I do believe there are better ways to understand how someone learns. I also don't believe there are limits on what we learn, the brain's placisity allows us to learn our entire life.

I've spoken hundreds of parents and it worries me that so many have problems accepting their children as they are and will be.For some intelligence is the magic word, a kind of hidden cure inside their child.But autistic kids with a normal IQ which they can use function better than those with high IQ's they can't use.

I am only concerned about the cases where the FC person NEVER does ANY kind of independent work, which seem to be the majority of FC cases.