Marianne Kaplan doesn't want to see Asperger's syndrome disappear - not in name, at least. But if a proposal from those revising psychiatry's diagnostic manual succeeds, it will be cut from the new edition and folded into the broader diagnosis of "autism spectrum disorder."
"That's ridiculous," says Ms. Kaplan, director of The Boy Inside , a documentary about her son growing up with Asperger's. "There's a huge difference between people with Asperger's syndrome and people with autism."
Asperger's syndrome, often described as "high-functioning autism," entered the Diagnostic and Statistical Manual of Mental Disorders in 1994. Like those with autism, people with Asperger's often find it difficult to express their feelings and need to follow schedules rigidly.
But unlike classic autism, children with Asperger's usually do not show signs of major cognitive impairment. While much has been done to increase understanding of Asperger's syndrome as a unique condition, those who are revising the fifth edition of the DSM, due out in 2012, say it should be eliminated for the sake of clarity.
But Asperger's advocates say dropping the diagnosis will only create confusion.
While those with Asperger's syndrome and autism often share a bundle of similar traits, such as an impaired ability to socialize, allowing Asperger's to disappear, at least as a diagnosis, might hurt the treatment of those with the syndrome.
"They have unique needs and unique characteristics that many others that are on the spectrum don't have," Mr. Semchych says.
If anything, psychiatrists and other mental-health experts should be creating more, not fewer, gradations in order to better understand the autism spectrum, says Jeff Cohen, author of The Asperger Parent .
"The idea that we're saying it's all one thing could be a problem," he says.
Not everyone is unhappy with the proposed change. The broader diagnosis of ASD may encourage a better understanding of the condition, says Leon Sloman, who runs a long-established clinic for children with autism spectrum disorders at the Centre for Addiction and Mental Health in Toronto.
"Some people with Asperger's may like to make a distinction between themselves and people with autism, but I think that the new system is realistic," Dr. Sloman says. "I think there's a bit of a prejudice in the psychiatric community against the condition because some people say it's not a real illness."
People with Asperger's syndrome may be socially awkward. But they can also be intellectually gifted, and often develop a detailed knowledge in narrow fields of interest.
But parents of children with Asperger's say the more specific the understanding of the syndrome is, the better the treatment of it will be.
"You're throwing away a very useful diagnostic tool by getting rid of the idea of Asperger's syndrome," says Denis Seguin, a Toronto-based journalist whose 12-year-old son has Asperger's.
"Especially after we've made so much progress in just getting that terminology out there and making people aware of this thing called Asperger's syndrome. Just to take it away seems really counterproductive."
While the DSM is not officially used in Canada - the International Classification of Diseases, produced by the World Health Organization, is the official classification system of mental disorders - it is widely consulted by experts, according to Wade Junek, president of the Canadian Academy of Child and Adolescent Psychiatry.
As well, he says, there is an attempt to make future editions of the two manuals "even closer in how they function." That suggests the proposed change could alter the way the disorder is classified in Canada.