According to the DSM-5, Depressive Disorders constitute a primary category of mood disorders characterized by depression as their central feature. This group of disorders is recognized by the presence of sad, empty, or irritable moods, along with associated somatic and cognitive changes that significantly impair an individual's ability to function. The specific disorders within this category can vary in their duration, timing, and presumed causes.

Depressive Disorders

A mild mood disorder resembling bipolar 2 in fluctuations from elevated to depressed mood, however, these fluctuations are not as intense. These fluctuations vary only from mild depression to hypomania. These symptoms must be present for at least 2 years for a diagnosis. 

Cyclothymia

Symptoms of depression that are due to the effects of medicine, drug abuse, alcoholism, exposure to toxins, or other forms of treatment.

Substance-induced Mood Disorder

Many mental illnesses (including cancer, injuries, infections, and chronic illnesses) can trigger symptoms of depression.

Mood disorder related to another health condition 

Histrionic Personality Disorder is a mental health condition marked by unstable emotions and a distorted self-image. It is a part of cluster B or ‘dramatic’ personality disorders. People with this disorder experience intense, unstable emotions and their self-esteem depends on the approval of others. They have a desire to be the center of attention at all times and are seductive, manipulative, and charming.

Histrionic Personality Disorder

Bipolar and Related Disorders are recognized by unusual shifts in mood, energy, activity levels, and concentration, affecting the ability to carry out day-to-day tasks. The presence of mania is a defining trait of bipolar disorder. These shifts range from periods of manic episodes (being extremely “up”, elated, irritable, or energized) and depressive episodes (being very “down”, indifferent, or hopeless).

Bipolar and Related Disorders

Anxiety disorder can range from mild feelings of nervousness and anxiousness to excessive fear or anxiety due to anticipation of future events.

Anxiety Disorder

A 30-year-old individual reports experiencing a significant loss of interest in their hobbies, feelings of worthlessness, and persistent fatigue for the past month. However, they also describe a distinct one-week period last year where they felt euphoric, needed only two hours of sleep per night without feeling tired, and impulsively bought a sports car they could not afford. Based on this pattern of symptoms, which of the following is the most likely diagnosis?

Most common types of mood disorders:
- Bipolar Disorder
- Anxiety Disorders
- Major Depressive Disorder
- Persistent Depressive Disorder (Dysthymia)
- Mood disorders related to another health condition 
- Substance-induced mood disorder

Syracuse University

State University of New York at Buffalo

Georgetown University

University of California, Davis

University of Colorado at Denver

Google

Mood disorders are defined as severe disturbances in mood and emotions, which can include depression, mania, and elation. Unlike typical emotional fluctuations, the mood shifts experienced in these disorders are extreme, distort an individual's perspective on life, and significantly impair their ability to function in daily activities.

Mood Disorders

Diagnostic and Statistical Manual of Mental Disorders (5th ed.; DSM–5; American Psychiatric Association, 2013)

DSM V

Spielman, R. M., Jenkins, W. J., & Lovett, M. D. (2020, April 22). Psychology (2nd ed.). OpenStax. https://openstax.org/books/psychology-2e/pages/1-introduction

OpenStax Psychology (2nd ed.) Textbook

Sekhon, S., &amp; Gupta, V. (2023, January). Mood disorder - statpearls - NCBI bookshelf. National Library of Medicine. https://www.ncbi.nlm.nih.gov/books/NBK558911/ 

Mood Disorder definition and types

Types of Mood Disorders

- Growing research and evidence that early adversity plays an influential role in the onset of mood disorders, specifically unipolar depression, bipolar mood disorder and depression.
- Numerous studies linked mood disorders and reports of parental indifference, overcontrol, neglect, and physical and sexual abuse. 
- Recent reports that subjects with chronic as opposed to acute depression had an earlier age of onset and higher somatic and psychiatric comorbidity,



What is the link between childhood adversity and chronicity in mood disorders? 

- This was a cohort study done in Zurich, Switzerland with participants from ages 19/20 to 40/41 with six waves of interviews that was meant to measure, chronic depression, bipolar disorder, and unipolar depression in relation to childhood and conduct problems.
- Interview sample (N=591) was screened with Symptom checklist 90-R (SCL-90-R). the sample was stratified by high versus low scores on the General Severity Index of the SCL -90-R) (high risk vs low risk subjects) with oversampling of risk cases.
- Over the 20 years, attrition rate was 38% (44 p men 31p women). Only subjects participating in waves 3-6 (ages 27/28 -40/41) could be considered for the present analysis because the temporal criteria for dysthymia had not yet been developed. (1986-1999).





Zurich Study 

The results showed a total of 15.9% of the clients were coded with relational disorder, 11.5% developmental disorders, 10.2% socioeconomic problems, 10.1% anxiety disorders, 6.3% mood disorders, and 16.6% of the clients were coded with other problems such as academic, religious or spiritual problems, occupational or accommodation problems. Finally, 14.5% other clinical situations that did not fit on a precise diagnosis. Data regarding 14.8% of participants was missing regarding diagnosis.


Diagnosing Individuals via Psychological Intervention

- Antidepressants 
- Mood stabilizing medication 
- Psychotherapy 
- Alternative treatments (electroconvulsive therapy, transcranial stimulation)

Mood Disorder Treatments

Add any references you use when researching mood disorders. 

Mood Disorder References

These studies or experiments have been conducted to further understand mood disorders. 

Mood Disorder Research 

Biological Treatments
Mood Stabilizers
Electroconvulsive Therapy
Brain Stimulation

Treatment for Mood Disorders

- Beck-Depression Inventory (BDI)
- Quick Inventory of Depression Symptomatology (QIDS)
- Hamilton Depression Rating Scale (HAM-D)
- Patient Health Questionnaire (PHQ-9)
- Montgomery-Asberg Depression Rating Scale (MADRS)
- The Mood Disorder Questionnaire (MDQ)
- Adverse Childhood Experiences Questionnaire (ACE)
- Young Mania Rating Scale (YMRS)

Current Scales used to measure Mood Disorder Symptoms

Qualities of Mood Disorders:

-mood shifts have no clear trigger

-mood is independent of current life events

-mood shift is gradual, happens over course of a couple of weeks

-duration of episode must be 2+ weeks

Qualities of RSD:

-mood shifts have trigger

-mood is reflective of current life events

-mood shift is immediate

-duration of episode is a few hours at most before returning to baseline


RSD vs Mood Disorders

Research indicates a connection between the structure and function of the hippocampus and various mood and anxiety disorders. This link is similar to the role observed for the amygdala in emotional processing.

Hippocampus's Link to Mood and Anxiety Disorders

While everyone experiences mood fluctuations, often in response to life events like the joy of a major victory or the sadness of a loss, these are considered normal. In contrast, the mood shifts in people with mood disorders are fundamentally different. They are extreme in nature, distort the individual's overall outlook on life, and are severe enough to impair their ability to function.

Distinguishing Normal Moods from Clinical Mood States

For individuals with mood disorders, the intense emotional pain, feelings of hopelessness, and overwhelming worthlessness can become unbearable. This profound distress, combined with an inability to cope, may lead them to view suicide as a potential escape from their suffering.

Mood Disorders and Suicidal Ideation

A significant biological factor in mood disorders involves imbalances in the neurotransmitters norepinephrine and serotonin. These chemicals are crucial for regulating key bodily functions that are often disrupted by these disorders, such as mood, sleep, appetite, arousal, and sex drive.

Neurotransmitter Imbalances as a Biological Basis for Mood Disorders

An individual named Alex has been feeling deeply sad and has had trouble sleeping since being laid off from his job a week ago. He is actively applying for new positions and occasionally sees friends. Another individual, Ben, has experienced a pervasive feeling of worthlessness and a loss of interest in all activities for the past two months. He has stopped going to his job and avoids all social contact. Based on the core principles that distinguish typical emotional fluctuations from a mood disorder, which statement is the most accurate analysis?

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