Depressive disorder Flashcards
Two broad categories mood disorders
Depression
Depression + Mania = Bipolar disorder
Mood disorder continuum
Major depression –> Dysthymia –> Normal mood –_ Hypermania –> Severe mania
General info Mood disorders
Depression is oldest and most frequently described mental illness.
Transient symptoms are normal, healthy responses to everyday disappointments.
Pathological depression occurs when adaptation is ineffective
mood disorder epidemiology
Intro…and Epidemiology
Affects 10% of the population, or 19 million in a given year.
Age factors:
More common in younger women and older men
Median age of onset in Bipolar is 18 in men and 20 in women
Social class-
lower income = higher prevalence
Bipolar more frequent in higher classes
Seasonality
Spring and fall
Race & Culture
Primary Risk factors mood disorders
Female gender
Unmarried
Early childhood trauma **
Negative life event, esp. loss and humiliation
First-degree family history **
High levels of neuroticism (responds to stress poorly) **
Postpartum period
Medical illness (next slide)
Absence of social support **
alcohol or substance abuse (which came first?)
Depressive Physiological factors
Physiological
Medication side-effects (more details later)
Neurological disorders
Electrolyte disturbances
Endocrine/ Hormonal disturbances (next slide)
Nutritional deficiencies
Depressive Biological theories
Genetics
Biochemical: deficiencies of norepinephrine, serotonin, and dopamine
New: Gene expression/repression
Depressive neuroendocrine theories
Possible failure in hypothalmic-pituitary-adrenocortical axis
Possible abnormality of TSH.
DSM V Depression categories
Disruptive Mood Dysregulation Disorder (DMDD) – (seen in children)
Major Depressive Disorder (single episode or recurrent)
Persistent Depressive Disorder (Dysthymia)
Premenstrual Dysphoric Disorder
Depressive Disorder Due to Another Medical Condition
Substance/Medication-Induced Depressive Disorder
Depressive disorder due to another medical condition
Neurological Infectious Cardiac Endocrine – (thyroid) Inflammatory Disorders **** Neoplastic disorders
Substance/Medication-Induced Depressive Disorder
CNS drugs Steroids Systemic Medications – which ones? Lots of categories Don’t forget alcohol/ other abused substances Intoxication Dependence Withdrawal
Major depressive disorder general def
Depressed mood or loss of interest or pleasure in usual activities.
Impaired social and occupational functioning for 2 weeks.
No history of manic behavior
Symptoms cannot be attributed to the use of substances or a general medical condition.
Classifications of Major Depressive disorder
Single episode or recurrent Mild, moderate, or severe With psychotic features With catatonic features Psychomotor retardation Chronic With seasonal pattern (formerly SAD) With postpartum onset
Major depressive subtypes
Seasonal features: episodes begin fall or winter and remit in spring, reduced cerebral metabolic activity, anergia, hypersomnia, overeating, weight gain, carb craving. Responds to light therapy.
Persistent Depressive disorder (mild/dysthymia)
Sad No evidence of psychosis Chronically depressed mood for: Most of the day More days than not For at least 2 years