Mood Disorders Flashcards
Mood Disorders in Youth (4)
(1) Major depressive disorder (MDD)
(2) Persistent depressive disorder (PDD)
(3) Disruptive Mood Dysregulation Disorder (DMDD)
(4) Bipolar disorder (I & II)
Core Features of Depression (3)
(1) Dysphoria
(2) Irritability
(3) Anhedonia
Dysphoria def
Prolonged sadness
Irritability def
Excessive sensitivity, hostility, and moodiness
=> In kids especially: CORE component of mood disorder
=> Unique to children and adolescents
Theory: Why not irritability symptom in adulthood?
In adults, more cognitive (e.g. negative thoughts), younger kids might not have those cognitive abilities
=> Thus might present as irritability
Anhedonia def
Loss of pleasure or interest in previously enjoyable activities
Specifiers of MDD relevant to PDD
Anxious distress & Melancholic features
Can you have MDD and PDD at the same time?
Yes -> double depression
Disruptive Mood Dysregulation Disorder (DMDD)– Core feature
Irritability
=> Diff than diff mood disorders bc it has the CHRONIC IRRITABILITY (vs bipolar: ‘EPISODIC’ picture)
=> Very controversial addition to DSM-5
Clear overlap between DMDD and __
ODD
Why would the controversial diagnosis of DMDD be in the DSM-5 with so little proof?
Reduce the perceived over-diagnosed # of kids diagnosed with pediatric bipolar disorder
DMDD is NOT diagnosed concurrently with:
(1) ODD
(2) BP
How do I help managing kids? (4)
(1) What are the triggers? Rly important -> Wanna work with them on those triggers
(2) Find coping strategies if getting dysregulated (counting to 10, take a break, calm down area).
(3) Diff ways to explain to kids the ‘no’. Sometimes they need an explanation.
(4) Don’t be afraid to ask for help - those kids are hard to be with
Axelson et al. 2013: Can we find DMDD in past samples?
- Research teams worked retrospectively by applying new criteria to data already collected
- Examined DMDD in a large sample of 6- to 12-year-olds seeking psychiatric services
Results?
(1) DMDD was NOT well-differentiated from CD or ODD
(2) NO difference between youth WITH and WITHOUT DMDD diagnosis in symptom severity or functional impairment
-> E.g. 100 kid with vs without DMDD; equally severe DMDD symptoms (Label is NOT helpful)
(3) DMDD diagnosis showed poor stability
Copeland et al. 2013: Examined the DMDD criteria in three large community samples
(1) 3-month prevalence rates for meeting criteria for DMDD ranged from 0.8% to 3.3%, with the highest rate in preschoolers.
(2) If you ignore the duration criteria, more cases of DMDD → bc stability is bad over time
(3) Highest levels of co-occurrence were with depressive disorders and ODD
(4) Occurred with another disorder 62%–92% of the time
(5) Affected children displayed elevated rates of social impairments, school suspension, service use, and poverty.
DMDD Diagnosis, main takeaways (3)
(1) Validity of this diagnosis is not firmly established
(2) Risk of over-diagnosis
(3) Irritability is a core feature of DMDD
Depression Diagnoses: Problem with categorical classification
Suggestion that it’s more Dimensional:
=> Many children and adolescents will have subclinical depression and have quite a lot of symptoms + impairment
=> Greater risk for going on to develop depression as well as other disorders and difficulties (e.g., substance use)
Preschool Depression: Is it common?
Very rare and important.
-> Real violation of expectations of what preschool-age kids should be (e.g. curious, excited to explore…).
-> But subset of very young kids w sadness/irritability underlying low mood.
Earlier onset of depression (preschool) associated with: …
Higher risk for more severe & chronic of depression later on
Luby et al (2014):
Study of ~250 preschoolers (high in depression) followed through school-age
Results? (2)
(1) 2.7X more likely to be depressed at school age
(2) Higher rates of anxiety and ADHD
-> Risk factor for depression + other disorders
Gaffrey et al (2011): Does the diagnostic criteria fit kids that are THIS young?
Results (2)
(1) 2-week MDE (major depressive episode) DURATION criterion not as relevant for preschoolers
(2) MDD in preschool associated with increased likelihood of having MDD 2 years later REGARDLESS of whether MDE duration criterion met at baseline if other sx were present
Gaffrey et al 2013:
Depressed 4-6 year olds & Brain activity
Results
Altered brain activity (e.g., + amygdala activity) when viewing EMOTIONAL faces vs non-depressed kids
***You also see this in adults
Is disrupted amygdala functioning a consequence of depression throughout lifespan or a biomarker/precursor?
We don’t rly know
=> All we know is that it’s associated (not necessarily causal at this point)
Mood disorders: Latine vs White kids
Latine youth more likely than White youth to meet diagnostic criteria for a mood disorder