Abnormal Ch 8

Abnormal Ch 8 - CHAPTER 8: MOOD DISORDERS Two key emotions...

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CHAPTER 8: MOOD DISORDERS Two key emotions on a continuum: Depression Low, sad state in which life seems dark and overwhelming Mania State of breathless euphoria and frenzied energy Most people with a mood disorder experience only depression This pattern is called unipolar depression Person has no history of mania Mood returns to normal when depression lifts Some people experience periods of depression that alternate with periods of mania This pattern is called bipolar disorder One might logically expect a third pattern – unipolar mania, in which people suffer from mania only – but this pattern is uncommon Symptoms of Depression Five main areas of functioning may be affected: Emotional symptoms Feeling “miserable,” “empty,” “humiliated” Experiencing little pleasure Motivational symptoms Lacking drive, initiative, spontaneity Between 6% and 15% of those with severe depression commit suicide Behavioral symptoms Less active, less productive Cognitive symptoms Hold negative views of themselves Blame themselves for unfortunate events Pessimism Physical symptoms Headaches, dizzy spells, general pain Diagnosing Unipolar Depression Criteria 1: Major depressive episode Marked by five or more symptoms lasting two or more weeks In extreme cases, symptoms are psychotic, including Hallucinations Delusions Criteria 2: No history of mania Two diagnoses to consider: Major depressive disorder: Criteria 1 and 2 are met
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Dysthymic disorder: Symptoms are “mild but chronic” Depression is longer lasting but less disabling Consistent symptoms for at least two years When dysthymic disorder leads to major depressive disorder, the sequence is called “double depression” Genetic factors Family pedigree, twin, adoption, and molecular gene studies suggest that some people inherit a biological predisposition Researchers have found that as many as 20% of relatives of those with depression are themselves depressed, compared with fewer than 10% of the general population Twin studies demonstrate a strong genetic component: Rates for identical (MZ) twins = 46%
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This note was uploaded on 05/14/2008 for the course PSYCH 107 taught by Professor Bluhm during the Spring '07 term at Allegheny.

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Abnormal Ch 8 - CHAPTER 8: MOOD DISORDERS Two key emotions...

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