APA
Leaders Defend New Diagnostic Guide
By John Gever, Deputy
Managing Editor, MedPage Today
Published: May 18, 2013
SAN
FRANCISCO -- The fifth edition of the "psychiatrist's bible" was
officially released here in all its 947-page glory, with its developers
offering a spirited rebuttal to their critics.
Known
as DSM-5, the new version of the American Psychiatric Association's (APA) Diagnostic
and Statistical Manual of Mental Disorders was launched at a press briefing
to kick off the organization's annual meeting. Most of the changes from the
previous edition had already been made public, at least in general outline.
At
the briefing, DSM-5 Task Force chairman David Kupfer, MD, of the University of
Pittsburgh, defended several of the most heavily criticized revisions from
DSM-IV, as the last edition was called.
Other
top APA leaders, including current president Dilip Jeste, MD, of the University
of California San Diego, and president-elect Jeffrey Lieberman, MD, of Columbia
University in New York City, addressed another, more recent controversy over
DSM-5, which was sparked by a blog
post from National Institute of Mental Health (NIMH) Director Thomas Insel,
MD.
In
his blog, Insel criticized the DSM classification system's scientific validity,
and his remarks were then reported in consumer media as suggesting DSM-5 is
"out of touch with science," as a New York Times headline put
it.
Kupfer
identified several specific changes from DSM-IV in the new edition that had
drawn the most heat from others in the mental health community and patient
advocacy groups.
Autism
Spectrum
Whereas
DSM-IV had four separate disorders that could be used for children showing
symptoms associated with autism, these are collapsed into a single "autism
spectrum disorder" with specifiers for specific symptom types and
severities. Autism advocacy groups expressed concern that the revision would
end up revoking some children's current diagnoses, depriving them of access to
services.
Kupfer
said the DSM-IV system had proved to be deeply flawed. The criteria for each of
the four disorders were vague enough that diagnoses were inconsistent --
children with similar symptom constellations were being assigned to different
DSM-IV classifications almost at random.
He
said the task force was sensitive to worries about the consequences of revising
the system, but they appear to be groundless. "We now already have
findings and published studies that suggest that there will really be very
little impact on prevalence or eligibility for services."
Bereavement
Exclusion in Major Depression
As
had previously been announced, DSM-5 drops the so-called "bereavement
exclusion" from the diagnosis of major depressive disorder, under which
the diagnosis was forbidden in individuals suffering a recent death of a loved
one. Critics charged that the change would prompt many people experiencing
"normal grief" to be labeled as depressed and given antidepressants,
to the benefit of drug companies.
Kupfer
said the criticism had arisen from "a misperception of what we were
seeking to do and have done." He noted that patients in the grieving
process are not immune from genuine, unhealthy depression. The task force's
goal in dropping the exclusion was to "prevent major depression from being
overlooked in some individuals who may be undergoing some form of grief or
bereavement."
An
APA fact sheet distributed at the briefing pointed to several features that
"usually" distinguish depressive illness from normal grief in
patients experiencing recent losses. They include continuous unrelieved
negative mood and feelings of worthlessness and self-loathing. In normal grief,
extreme sadness is typically intermittent and self-esteem is unaffected, the
fact sheet said.
Disruptive
Mood Dysregulation Disorder (DMDD)
One
of the few entirely new conditions added in DSM-5, DMDD is for children 6 and
older showing repeated and severe rage outbursts amidst long periods of chronic
irritability and anger. Critics said this would open the door to diagnosis and
treatment of temper tantrums within the spectrum of normal childhood behavior.
Kupfer
said that was not the case. Worried parents have already been bringing children
with these symptoms to pediatricians and child psychiatrists. Without a more
specific diagnosis, many of these children end up diagnosed with bipolar
disorder and treated accordingly.
"We're
not referring to the usual childhood temper tantrum," he said. The
diagnosis requires three or more rage outbursts per week for at least a year,
and the under-6 age group that is most subject to tantrums is excluded from
DMDD.
The
diagnosis "is intended, in part, to address issues about potential
overdiagnosis and overtreatment of bipolar disorder," Kupfer said.
Mild
Neurocognitive Disorder
In
a critique of DSM-5 published on the eve of its launch, the head of DSM-IV's
development in the 1980s, Allen Frances, MD, of Duke University in Durham,
N.C., singled out the new edition's inclusion of mild neurocognitive disorder
as another example of medicalizing normal function. The "forgetfulness of
aging," he suggested, is not something that needs diagnosis or treatment.
"There
has been concern that we may have added a disorder that may not be important
enough" to merit clinical attention, Kupfer said.
But
as with the distinction between normal grief and diagnosable depression, he
said the criteria specified in DSM-5 for mild neurocognitive disorder identify
features that are clearly unhealthy and deserve recognition.
These
include loss of functional abilities and the need for patients and caregivers
to take steps to preserve independence.
"Clinicians
have lacked a reliable diagnosis to assess such [impairments] and to understand
what might be the most appropriate treatment or services," Kupfer said.
Including
mild neurocognitive disorders in DSM-5 "serves two essential needs,"
he said. One is that it provides "an opportunity for early
detection," while another is that it "encourages the development of
an effective treatment plan before deficits become more pronounced and progress
to dementia."
Insel's
Comments
Apparently
without meaning to, Insel set off a firestorm with an April 29 "director's
blog" post on the NIMH website, in which he lamented that the DSM -- not
just the new edition but its predecessors as well -- is not grounded solidly in
biology. Rather, he said, "the DSM diagnoses are based on a consensus
about clusters of clinical symptoms, not any objective laboratory measure. In
the rest of medicine, this would be equivalent to creating diagnostic systems
based on the nature of chest pain or the quality of fever."
As
a result, Insel wrote, the DSM's validity -- that is, correspondence between
the diagnostic labels and underlying biological pathology -- is largely
lacking. "Patients with mental disorders deserve better," he wrote,
and urged researchers to avoid grounding their grant applications on DSM-based
disease classifications.
His
remarks were quickly interpreted as an attack on DSM-5, which both he and the
APA then denied. A joint statement by Insel and Lieberman issued last week
sought to clarify Insel's intention, which was to highlight the lack of
scientific understanding of most mental disorders' biological basis and the need
for more and better research.
The
DSM, "along with the International Classification of Diseases (ICD)
represents the best information currently available for clinical diagnosis of
mental disorders. Patients, families, and insurers can be confident that
effective treatments are available and that the DSM is the key resource for
delivering the best available care," the statement assured.
At
the press briefing here, APA officials reiterated that there is, in fact, no
disagreement with Insel.
"We
support what he's trying to do," said John Scully, MD, the APA's chief
executive officer. "We want him to get biomarkers for us."
Added
Lieberman, "He [Insel] was trying to exhort the biomedical research
community to try to break new ground that will lead to more dynamic and
fundamental changes in psychiatric diagnosis."
Yet,
Kupfer suggested, the flaws in DSM-IV for daily clinical practice needed to be
addressed in the short term, and an extension of the symptom-based approach
remained the only alternative.
"While
we don't yet have the biomarkers that we are hoping are on the edge of
discovery, patients can't keep waiting, and we can't keep waiting," he
said.
Other
Criticisms
Darrel
Regier, MD, MPH, the APA's research director and vice chair of the DSM-5 task
force, refuted the criticism that the DSM promotes overtreatment. "The DSM
is not a practice guideline," he said. The APA does produce such
guidelines, but they are developed "in an entirely separate process."
Many
of the problems that the DSM and the psychiatric profession are accused of
creating actually result from political decisions and policies beyond the
physicians' control, he added. He pointed to the de-institutionalization
movement of the 1970s that resulted in a major increase in homelessness.
That
was not the fault of psychiatrists, he argued because they correctly recognized
that many institutionalized patients would do better in community-based
treatment. Instead, there was a lack of government planning and resources to
provide such treatment to former mental inpatients.
"That's
a social policy issue that goes far beyond a diagnostic manual," Regier
said.
At
another point, Scully said that many of the criticisms directed at the DSM and
APA ultimately arise from "the stigma of mental illness."
Kupfer,
responding to a question about excessive reliance on drug therapies in
psychiatry, said he expected that physicians would not look only to drugs in
treating patients diagnosed with mental illnesses; many nonpharmacological
interventions are available and are known to be effective, he said.
DSM-5's
Availability
DSM-5
is now on sale for $199 in hardcover and $149 in paperback. The APA has never
made the DSM freely available (it is an important source of revenue) and no
change in that policy is planned.
Two
companion publications are also available immediately: a concise desk reference
and a "pocket guide" to conducting diagnostic interviews aligned with
the new edition.
A
digital version is promised within a few months through a secure website and
also as mobile device applications. Revisions will be more frequent and most
likely would be distributed only electronically, Kupfer said.
Also
later this year, several other print companions to the DSM-5 will be launched.
These include a "user-friendly guidebook," a self-exam on the DSM-5
content, a study guide, clinical case studies, and a handbook for differential
diagnosis.
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