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Neuropsychology of Depression

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Presentation on theme: "Neuropsychology of Depression"— Presentation transcript:

1 Neuropsychology of Depression
Clinical case Diagnostic criteria Clinical Features Cognitive Deficits Neuroanatomical differences

2 Lynn 50 year old, right handed woman
1 yr. history of gradually progressive cognitive difficulties Decreased vocabulaty, word-finding, inability to multi-task, poor short-term memory Poor work evaluations, and work is more “effortful” Mild difficulty managing finances Dx question: dementia vs. depression

3 History Family issues beginning in teen years Diagnoses
1st psychiatric hospitalization age 16 Diagnoses Major Depression Bi-polar depression Personality Disorder Major Depressive Episode 9 months ago Out of work 2 months Currently resolved Current tx: pharmacotherapy and psychotherapy Early onset AD in mother and maternal grandmother

4 Mood Disorders Thought Disorders Anxiety Disorders
Major Depressive Disorder (MDD) MDD w/ Psychotic Features Schizophrenia BPD w/ Psychotic Features Schizotypal Personality Disorder Bipolar Disorders (BPD) Schizoaffective Disorder Schizoid Personality Disorder Dysthymic Disorder Generalized Anxiety Disorder Obsessive Compulsive Disorder Panic Disorder Agoraphobia Post-Traumatic Stress Disorder Simple Phobias Anxiety Disorders

5 Fine Line Between Normal Mood & Disorders
Hypo-motivated, low pleasure: Gloomy, incapable of fun Humorless Pessimistic, skeptical Guilt-prone, low self-esteem Introverted, restricted social life Sluggish, inactive, passive Few interests Long sleeper (> 10 hrs/night) Thoughtful, deeply emotional Hyper-motivated Cheerful, exuberant jocular Optimistic, carefree self-assured Extroverted, people-seeker High energy level, several plans, lots of ideas Versatile with broad interests Short sleeper (< 5 hrs/night) Flighty, impulsive, over-confident Over-involved, meddlesome

6 What is abnormal? Major Depression
Yes N ‘Often Sad’ ‘Often Tearful’ ‘+ Sad < 2 wks’ ‘+ Can’t Cheer Up’ ‘+ Interferes w/ Functioning’ Sadness

7 DSM-V Depressive Disorders
Disruptive mood dysregulation disorder Major Depressive disorder Persistent depressive disorder (dysthymia) PMDD Substance/medication-induced depressive disorder Depressive Disorder due to another medical condition Sad, empty, or irritable mood 2) Somatic and cognitive changes that affect capacity to function Vary in duration, timing, and/or etiology

8 Major Depressive Disorder
 2 weeks of 5 or more of the following representing a change from previous functioning (one must be depressed mood or loss of interest or pleasure): Depressed mood, most of the day Markedly diminished interest or pleasure in most or almost all, activities Weight loss or gain (or ↑↓ in appetite) Sleep disturbance (hyper- or hyposomnia) Feeling worthless, excessive guilt Diminished energy, fatigue Trouble concentrating or indecisiveness Psychomotor agitation or retardation Recurrent thoughts of death, suicidal ideation without a specific plan, suicide attempt or a specific plan for committing suicide Clinically significant distress or impairment Not attributable to direct physiologic effects of drug or medical condition Never been a manic or hypomanic episode

9 Bipolar and Related Disorders
Bipolar I Bipolar II Cyclothymic disorder Substance/medication-induced bipolar and related disorder Bipolar and related disorder due to another medical condition

10 Manic Episode Distinct period of 1 week of elevated, expansive, or irritable mood At least 3 manic symptoms (4 if mood only irritable) Increased self-esteem or grandiosity Decreased need for sleep Increased talking or pressure of speech Racing thoughts or flight of ideas Distractibility Agitation or increased goal-directed activity Excessive involvement in pleasurable activities with high potential for adverse consequences Causes significant impairment in functioning Not due to a general medical condition or caused by drug use

11 Hypomanic episode Distinct period of 4 consecutive days of elevated, expansive, or irritable mood At least 3 manic symptoms (4 if mood only irritable) Increased self-esteem or grandiosity Decreased need for sleep Increased talking or pressure of speech Racing thoughts or flight of ideas Distractibility Agitation or increased goal-directed activity Excessive involvement in pleasurable activities with high potential for adverse consequences Clear change in functioning Observable by others Function intact Not due to a general medical condition or caused by drug use

12 Bipolar Subtypes Bipolar I Bipolar II
One or more Manic Episodes, with or without a Major Depressive Episode Bipolar II One or more hypomanic episodes and at least one Major Depressive Episode no full Manic episodes

13 MANIA MIXED EPISODE HYPOMANIA NORMAL MOOD DEPRESSION
Stahl S M, Essential Psychopharmacology (2000)

14 Cognitive Deficits in MDD
Subcortical-frontal pattern Attention Psychomotor speed Executive function Impacted by Severity Age of onset Number of prior episodes Current state (remitted/in episode)

15 Depression Neuropsychological Profile
Deficits Preserved Slowed information processing Executive Attention/concentration Verbal fluency Cognitive flexibility Problem solving Memory Encoding retrieval Orientation Language Visuo-spatial Motor (non-timed)

16 Epidemiology MDD Prevalence Females > Males (1.5-3x)
1 yr: 6.7% (15.7 million adults in US) Lifetime: 16.2% (32-35 million adults in US) Females > Males (1.5-3x) Typical onset – late 20s Increases after puberty 1st onset in latelife not uncommon Often associated with neurological impairment Risk factors Lower SES

17 Epidemiology - Bipolar
Bipolar I .06% prevalence M = F Mean age onset: 18y 90% of those with single ME go on to have recurrent mood episodes Bipolar II .08% prevalence F> M (clinic samples) Mean age onset: mid 20s Most often begins with MDE 12% initial dx MDD 5-15% rapid cycling 5-15% will experience ME (bipolar I)

18 Risk Factors - MDD Early parental loss Adverse life events
often trigger incidence/relapse ‘Neurotic’ personality style Chronic stress

19 Gender differences - MDD
F>M, but no difference in Sx, course, tx response, or functional consequences Suicide attempt F>M Suicide completion M>F

20 Gender differences - BPD
Females more likely to experience rapid cycling and mixed states Comorbidity patterns differ f: eating disorder m: alcohol use disorder Females more likely to experience depressive symptoms Childbirth may trigger hypomanic episode 10-20% in non-clinic samples

21 Consequences of disorder - MDD
High individual variability Severe - complete incapacity Cognitive impairments more pain, physical illness, decreased functioning Comorbidities: SUD, Panic disorder, OCD, eating disorders, BPD

22 Consequences of disorder
Bipolar I Bipolar II Lifetime suicide risk: 15X 36.3% ¼ all suicides 30% severe impairment in work function Cognitive impairments Comorbidities Anxiety (3/4), ADHD, impulse control/conduct, SUD (1/2 alcohol) Lifetime risk: 32.4% 1/3 report SA Lethality > BPI 20% no inter-episode recovery Functional recovery < BPI Cognitive impairments Comorbidities 60% have 3 or more 75% anxiety disorder, 37% SUD

23 Sensitization Hypothesis of Recurrence
Bipolar/unipolar episodes more likely to recur with higher number of prior episodes milder/no stressors as number of episodes increase earlier onset of illness more severe early stressor Post, 1992

24 Dienes, 2006

25 Multi-center (n=11) Meta-analysis of HC & Amyg.Volumes
Bipolar Disorder vs HC Hallahan, 2011

26 Amygdala Changes in New-onset Adolescent BPD
Bitter, 2011

27 Blood Flow Blue = BPD < Controls Red = BPD > Controls
Independent Of Mood State Blood Flow Blue = BPD < Controls Red = BPD > Controls Chen, 2011

28 Blood Flow Blue = BPD < Controls Red = BPD > Controls
BPD Patients in Specific Mood States Blood Flow Blue = BPD < Controls Red = BPD > Controls Chen, 2011

29 Lynn’s Test Results Digit Span 9 Letter Number Sequencing SS MMSE
28/30 Hooper Visual Org Test 8 Digit Span 9 Trail Making A 5 Letter Number Sequencing Trail Making B 3 WMS-III Imm Verbal Memory 7 Phonemic Fluency Imm Visual Memory Category Fluency Del Verbal Memory 11 Boston Naming Test Delayed Visual Memory 13 Recognition


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