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Persistent Depressive Disorder (Dysthymia)
Transcript of Persistent Depressive Disorder (Dysthymia)
This disorder represents a
of DSM-IV-defined chronic
major depressive disorder
. The essential feature of persistent depressive disorder (dysthymia) is a depressed mood that occurs for most of the day, for more days than not, for at least 2 years, or at least 1 year for children and adolescents (Criterion A).
Major Depressive Disorder may precede PDD, and MDD episodes may occur during PDD episodes
Individuals whose whose symptoms meet MDD criteria for 2 years should be given a diagnosis of PDD as well as MDD.
Depressed mood (
or irritable mood
most of the day
, for more days than not, (subjective account/observation by others ), for at least 2 years.
Specifiers for Persistent Depressive Disorder
Mild, moderate or severe
In partial or full remission (if applicable)
Early (before 21) or late (21 or older) onset
Specify mood features
With anxious distress, mixed features,
melancholic features, atypical features, mood- congruent or
mood-incongruent psychotic features, and peripartum onset
300.4 Persistent Depressive Disorder, mild severity, early onset,
with atypical features, with pure dysthymic syndrome
Persistent Depressive Disorder (Dysthymia)
November 16, 2014
Nova Southeastern University
PSY 8115: Child and Adolescent Psychopathology
Individuals with PDD describe their mood as:
Sad or “
down in the dumps
Difference Between MDD and PDD
This is a
depression that persists for
2 years or more!
A typical major depressive episode may last for
Although, symptoms of PDD are chronic, they are
than those for children with MDD
During the 2-year period ( 1 year for children or adolescents):
last no longer than 2 months (Criterion C)
Symptoms become a part of an individual’s day-to-day experience (particular in the case of early onset)
I’ve always been this way
May not be reported unless the individual is directly prompted.
Presence, while depressed, of
two (or more
of the following:
Poor appetite or overeating
Insomnia or hypersomnia
Low energy or fatigue
Poor concentration or difficulty making decisions
Feelings of Hopelessness
During the 2-year period (1 year for children and adolescents) of disturbance:
without symptoms in
Criterion A & B
for more than
Criteria for MDD
may be continuously
present for 2 years
episode & criteria have never
been met for
chronic, fluctuating mood disturbance, involving numerous periods of hypomanic and depressive symptoms
better explained by:
a persistent schizoaffective disorder, schizophrenia,
delusional disorder, or
other specified/unspecified schizophrenia spectrum and other psychotic disorder
are not attributable
to the physiological effects of a substance ( e.g., a drug,
abuse, medication ) or another medical condition
The symptoms cause
in social, occupational or other important areas of functioning
Prevalence and Comorbidity
Development and Course
Risk and Prognostic Factors
With pure dysthymic syndrome
( full criteria for MDD has not been met in at least the preceding 2 yrs)
With persistent major depressive episode
( full criteria for MDD has been met in at least the preceding 2 yrs)
With intermittent major depressive episodes, with current episode
( full criteria for MDD, 8 weeks with symptoms below threshold for major depressive episode)
With intermittent major depressive episodes, without current episode
( full criteria for MDD has not been met, but there has been one or more depressive episodes in at least the preceding 2 yrs)
Children with PDD (Dysthymia)
What to look for
Poor emotion regulation
Constant feelings of sadness/pessimism
Feelings of being unloved and forlorn
Poor performance at school
Difficulty interacting with others
in social situations
Rates of Dysthymia are
than those of MDD
1% of children
5% of adolescents
displaying the disorder
During course of Dysthymia as many as
70% of children
may have an episode of major depression
Most prevalent co-occurring diagnosis with dysthymia is MDD
About 1/2 of the children with dysthymic disorder also have one or more co-occurring nonaffective disorders that preceded the dysthymia:
( SAD & GAD most common)
Also at an increased risk for:
Substance abuse disorder
Who tends to be Most Depressed?
According to the NIMH, African-Americans have a lower lifetime risk of depression than whites. But according to a 2010 study by the CDC, African-Americans have the highest rate of current depression (12.8 percent), followed by Hispanics (11.4 percent), and whites (7.9 percent
Persistent depressive disorder often has an
( i.e., in childhood, adolescence, or early adult life) and, by definition
a chronic course
Dysthymic disorder develops about
3 years earlier
than MDD, commonly around 11 to 12 years of age
(i.e., < 21 yrs) is
with higher likelihood of comorbid
substance abuse disorders
dysthymia has a
, with an average episode length of
2 to 5 years
Almost all children
The early onset and extended duration of dysthymia make it a serious problem!
the disorder at
4 years later
will have spent
more than 30%
of their entire lives and
of their school-age years being
Since depression is
academic,cognitive,family, and social problems
these long-lasting episodes
of dysthymia can have
extremely harmful effects
Factors predictive of
poorer long-term outcome
Higher levels of neuroticism (negative affectivity)
Greater symptom severity
Poorer global functioning
Presence of anxiety disorders or conduct disorder
Childhood risk factors include:
loss of a parent or sibling
Genetic and Physiological
Children are at
of developing persistent depressive disorder if they have a
with the disorder.
A number of brain regions (e.g., prefrontal cortex, anterior cingulate, amygdala, hippocampus) have been implicated in PDD.
exist as well
(Polysomnography : a comprehensive recording of the biophysiological changes that occur during sleep )
Performance on IQ and achievement
Evaluation and Assessment
Role of the Family and Access to Treatment
Community and Technological
Jean Baker (1995)
the Reynolds Adolescent Depression Scale (
) and the Suicidal Ideation Questionnaire (SIQ)
to 58 moderately academically gifted students
(top 5% class rank or earning total score of 600 or less on SAT at age 13), 56 average students (middle class rank) and 32 exceptionally gifted (total score of 900 or more on SAT at age 13) from midwestern junior high and high schools.
“The major finding from this study is that academically able and exceptionally able students are not distinguishable from average students by differences in levels of depression or suicidal ideation
” (p. 222).
Baker acknowledged that she may have undersampled distressed children in this study because of the parental consent requirement, but she did not think selection bias influenced her results. However, she did stress that her study evaluated depression and suicidal ideation among highly achieving students from schools with gifted programs in place.
Different results might be expected from samples with students who are not so high achieving.
Certain depressive symptoms such as
difficulty concentrating, loss of interest, and slowness of thought and movement
are likely to have
on a child's intellectual and academic functioning
overall intellectual potential
of depressed youth is
comparable to the potential
of non-depressed youth
severity of depression
effects of depression
A study by Guyer and colleagues (2011) they examine the association between memory for previously encoded emotional faces and depression symptoms assessed over 4 years in adolescent girls. Investigating the interface between memory deficits and depression in adolescent girls
: Girls with higher depression symptom levels from ages 9 to 12 years evidenced
lower accuracy i
n identifying previously encoded emotional faces. Controlling for IQ,
higher depression symptom level
specific to previously encoded sad and happy faces. These effects were not moderated by race.
: Depression may be associated with
" that require attention, coordination, speed, or recall of emotionally coded information
Children with depression perform more poorly than others in school (Cole, 1990)
They score lower on standard achievement tests
Are rated by their teachers as achieving less academically
Have lower levels of grade attainment
Children, adolescents, and young adults with
specific learning disorders
high prevalence of depression
. Sixty to eighty percent (
) of learning disabled children
failing in school
will fulfill criteria for depression at the time of initial clinical evaluation. (Weinberg, Harper & Emslie, 1995)
In a study by Wilkinson and Goodyer (2006), Adolescents with current unipolar depression (n = 40) were compared with age and sex-matched controls (n = 38)
on tests of attention
general cognitive abilities
and completed the mood-related ruminative response style questionnaire.
: Compared to controls, depressed participants were
at switching attention. There was no association between attentional switching and mood-related ruminations and both processes contributed to the likelihood of being depressed.
Findings were not accounted for by slowness in reading and speaking, the effects of antidepressants nor being more careful on tasks.
Fortunately, depression can be identified and effectively treated even in very young children. Unfortunately, diagnosis and treatment of childhood depression require very specialized training and skills.
For example, infants and preschoolers rarely have the ability to express feelings well using language. So depressive symptoms must be inferred from:
information gleaned from interviewing parents and other caregivers,
observation of the child’s interactions with other people, and play
Only child psychiatrists, child psychologists, school psychologists, and other mental health professionals with specific training in working with young children are likely to have the expertise necessary to conduct such evaluations appropriately.
thorough evaluation should begin with a physical examination to rule out identifiable physical causes for the behavior patterns that suggest depression. This should be carried out by a pediatrician or other physician trained to work with
The physical exam usually includes assessment of the child’s visual and auditory acuity. Undiagnosed vision and/or hearing impairment can cause a child to appear depressed or even trigger depression.
For older children the examination should also include screening for drug and alcohol use, since this is occurring in our society at earlier and earlier ages and the use can mimic or bring on depressive episodes.
After the physical examination and any necessary medical treatment, qualified, child-oriented mental health professionals should see the child. They should:
the parents and other caregivers as necessary
with other professionals including the
pediatrician, teachers, and other school or daycare
Choose evaluative tests and observational procedures as needed, inform the parents of the results of the evaluation, and then formulate a
comprehensive treatment/intervention plan in collaboration with the parents.
This evaluation includes a discussion with parents about child's thoughts, feelings and behavior and may include a questionnaire to help pinpoint a diagnosis
Screening Tools and Rating Scales:
Weinberg Depression Scale for Children and Adolescents (WDSCA)
The WDSCA self-report contains 56 yes/no items designed for individuals ages 5-21. This screening tool can be used as an initial assessment scale and can be repeated to measure response to treatments. It takes 3-5 minutes to complete.
Children's Depression Rating Scale-Revised (CDRS-R)
The CDRS-R is a clinical interview tool designed for assessing 6-12 year-olds, also successfully used for adolescents. It helps clinicians rate 17 symptom areas:
impaired schoolwork, difficulty having fun, social withdrawal, appetite disturbance, sleep disturbance, excessive fatigue, physical complaints, irritability, excessive guilt, low self-esteem, depressed feelings, morbid ideas, suicidal ideas, excessive weeping, depressed facial affect, listless speech, and hypoactivity
. It is used to diagnose depression and can be repeated to measure response to treatments. CDRS-R can be administered in 15-20 minutes.
Beck Depression Inventory for Youth (BDI-Y)
This is a 20-item, self-report inventory, for early identification of symptoms of depression in children and adolescents ages 7-14.
for emotional and social difficulties
that may impair a child's ability to function in school settings.
It includes items related to
sleep disturbance; negative thoughts about self, life, and the future; and feelings of sadness and guilt
It is useful in
planning and monitoring educational placement
and clinical treatment settings. (written at a second-grade level), but may be administered orally (usually in 5-10 minutes).
Family influences play a vital supportive role in any treatment process:
Encouragement of developmentally appropriate play, physical exercise, and pleasurable activities are appropriate for children with anhedonia (inability to feel pleasure).
Physical exercise has been shown to improve mood. Active play or sports (if psychologically supportive, rather than an opportunity for criticism) can accomplish these aims
Parents and family members need to be informed about clinical aspects and biological/psychological determinants of depression and instructed about the child’s need for reassurance and support, rather than punishment for unacceptable behavior.
Education of all family members is essential because the symptoms of of depression (lack of interest, fatigue, isolation and irritability) may affect the response of each member of the family to the patient and increase their emotional involvement, "causing more stress, guilty or angry feelings for the child to cope with".
Treatments for Youngsters with Depression
Aims to increase behaviors that elicit positive reinforcement & reduce punishment from environment
(may involve: teaching social and other coping skills,)
Helps children become more aware of pessimistic and negative thoughts
Once self-defeating thought patterns are recognized, child is taught to change from a negative view to a optimistic one
Most common psychosocial
Combines elements of behavioral
& cognitive therapies in an integrated
Attribution retraining may also be used
to challenge the youngster's
for Adolescent Depression (ITP-A)
Explores family and interpersonal interactions that maintain depression
Family sessions are supplemented with individual sessions where:
children are encouraged to understand their own neg. cognitive style
Effects of their depression on others
Increase pleasant activities with family members & peers
Treats mood disturbances
and other symptoms of depression
especially selective serotonin reuptake inhibitors (SSRIs)
American Psychological Association, 750 First Street, NE, Washington, DC 20002; (202) 336-5500;
American Psychiatric Association, 1400 K Street, NW, Washington, DC 20005; (202) 682-6000;
American Psychiatric Association (2013) Diagnostic and statistical manual of mental disorders (DSM-5). Washington DC: American Psychiatric Association
National Association of School Psychologists, Suite 402, 4340 East West Highway, Bethesda, MD 20814;
Guyer, A.E., Chaote, V.R., Grimm, K. J., Pine, D. S., & Keenan, K. (2011). Emerging depression is associated with face memory deficits in adolescent girls. Journal of the American Academy of Child and Adolescent Psychiatry, 50, 180-190.
Mash, E.J. & Wolfe, D.A. (2012). Abnormal child psychology (5th edition). Belmont, CA: Wadsworth Publishing
National Institute of Mental Health, Office of Communications and Public Liaison, Information Resources and Inquiries Branch, Room 8184, 6001
Executive Boulevard, MSC 9663, Bethesda, MD 20892; (310) 443-4513; www.nimh.nih.gov
National Mental Health Association, 1021 Prince Street, Alexandria, VA 22314;
Wilkinson, P.O., & Goodyer, I. M. (2006). Attention difficulties and mood-related ruminative response style in adolescents with unipolar depression. Journal of Child Psychology and Psychiatry, 47, 1284-1291
Mental Health and Wellness
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