I often get asked “Does my child have Asperger’s?” in my clinical work. Or, “Do I have Asperger’s?”
These are challenging questions to answer. They have stimulated much debate among clinicians, researchers, and those who have identify with the term over the past several years.
Asperger’s Disorder (more commonly referred to as Asperger’s syndrome) is linked to the work of Hans Asperger, an Austrian physician who published his initial work in German in 1944.
He described children who presented with strong vocabulary and language skills in conjunction with a range of symptoms: Odd social use of language and tone of voice, social isolation from peers, repetitive behaviours, strong interests in unusual topics, and a desire to maintain structure and routine in their lives.
Much of the English-speaking world remained unaware of Asperger’s work until 1991 when it was translated and brought to the attention of clinicians by English psychiatrist Lorna Wing.
Although this description is similar to that of autism, Asperger’s account differed in that speech was less commonly delayed, motor clumsiness was more common, onset of symptoms occurred later, and his initial cases were all male.
A ‘pervasive developmental disorder’
Asperger’s syndrome made its official appearance when the World Health Organization (WHO) published the initial version of the International Classification of Diseases (ICD), 10th edition.
Subsequently, the American Psychiatric Association (APA) included it in the newly defined category of Pervasive Developmental Disorders (PDDs) alongside Autistic Disorder and other similar diagnostic terms in 2000, which brought more widespread clinical attention and an appreciation that not only males can be affected.
Interestingly, the APA reportedly included Asperger’s in an effort to prompt researchers to identify potentially distinct subgroups of autism — so that assessment and treatment could be refined and targeted.
These efforts yielded variable results, and the general research consensus is that clinicians applied diagnostic criteria inconsistently and that individuals with Asperger’s and autism are more similar than different.
Replaced by ‘Autism Spectrum Disorder’
As a result of this inconsistent application and similarities among the PDDs, the APA removed the clinical term from use and replaced it with a broad Autism Spectrum Disorder (ASD) term — encompassing several previous distinct disorders — when they published their most recent diagnostic manual in 2013.