Mood Disorders Copyright © Allyn & Bacon 2007. Major Depression A form of depression that does not...

Mood DisordersMood Disorders

Copyright © Allyn & Bacon 2007


Major DepressionMajor Depression

A form of depression that does not alternate with mania

Major DepressionMajor Depression

The most common mood disorder

Causes?--Involves a genetic predisposition and biological basis in the decrease of

certain neurotransmitters.

--Activity levels in frontal left lobe also implicated.

--In some cases, depression may be caused by a viral infection

--Or perhaps it is a collection of disorders having a variety of causes

--May not be just biological…a cognitive-behavioral explanation says a negative event along with low self esteem/ pessimistic attitude may lead to depression.


Biologically alone can not explain depression… it is a mental, social and behavioral condition.

Symptoms of Major DepressionSymptoms of Major Depression

Agitation, restlessness, and irritability

Dramatic change in appetite, often with weight gain or loss

Extreme difficulty concentrating

Fatigue and lack of energy

Feelings of hopelessness and helplessness

Feelings of worthlessness, self-hate, and inappropriate guilt

Withdrawal from usual activities, a loss of interest or pleasure in activities that were once enjoyed

Thoughts of death or suicide

Trouble sleeping or excessive sleeping


Major depression is when a person has five or more symptoms of depression for at least

two weeks.

DysthymiaA mild form of depression

• Shows less than 5 symptoms of depression for more than 2 years

• No major depressive element


Seasonal Affective Disorder (SAD)

A form of depression believed to be caused by deprivation of sunlight such as during the winter months.


Bipolar DisorderBipolar Disorder(formerly known as

manic depression)

Mental abnormality involving swings of mood from mania to depression.

Very up to very down


Mood Disorders Copyright © Allyn & Bacon 2007. Major Depression A form of depression that does not...

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