Mood disorder
A group of mental disorders with mood disturbance as the core feature.
A mood disorder, also known as an affective disorder, is a group of conditions of mental and behavioral disorder where the main underlying characteristic is a disturbance in the person's mood. The classification is in the Diagnostic and Statistical Manual of Mental Disorders (DSM) and International Classification of Diseases (ICD). Mood disorders fall into seven groups, including abnormally elevated mood, depressed mood, moods which cycle between mania and depression, and several subtypes of depressive disorders or psychiatric syndromes featuring less severe symptoms.
- field
- Psychiatry
- known_for
- Classification of mood disorders including major depressive disorder and bipolar disorder
- classification_systems
- DSM and ICD
- subtypes
- Depressive disorders, bipolar disorder, dysthymia, cyclothymia, and others
Lore & Background
English psychiatrist Henry Maudsley proposed an overarching category of affective disorder. The term was then replaced by mood disorder, as the latter refers to the underlying or longitudinal emotional state, whereas the former refers to the external expression observed by others. Mood disorders may be substance induced, or occur in response to a medical condition. In some cases, more than one mood disorder can be present in an individual, like bipolar disorder and depressive disorder.
Reader's Guide
Mood disorders are significant because they represent a major category of mental illness affecting roughly 8.5 percent of the world's population, according to epidemiological studies carried out in Europe. Depressive disorder is frequent in primary care and general hospital practice but is often undetected, and unrecognized depressive disorder may slow recovery and worsen prognosis in physical illness. Individuals with a major depressive episode or major depressive disorder are at increased risk for suicide, but seeking help and treatment from a health professional dramatically reduces that risk. The classification includes numerous subtypes such as atypical depression, melancholic depression, psychotic major depression, catatonic depression, postpartum depression, premenstrual dysphoric disorder, seasonal affective disorder, dysthymia, and double depression. The diagnostic criteria require symptoms nearly all day for at least two weeks for a major depressive episode. Cultural influences may challenge the definition and diagnosis of psychiatric disorders, as seen in a study by Parker et al. that researched MDD in Chinese individuals.
Did You Know?
- Roughly 8.5 percent of the world's population have a depressive disorder, according to European epidemiological studies.
- Depression appears in infants as young as 6 months old who have been separated from their mothers.
- Asking a depressed friend or family member if they have thought of committing suicide does not 'plant' the idea or increase risk.
- Postpartum depression affects 10–15% of women and typically sets in within three months of labor.
Frequently Asked Questions
Who is Mood disorder?
Mood disorder is a broad psychiatric category that groups together conditions where a person's emotional state is the central problem. It is not a single diagnosis but an umbrella term covering several related conditions recognized in both the DSM and ICD.
What are Mood disorder's powers/role?
The defining trait of this category is that mood disturbance—whether abnormally low, abnormally high, or cycling between the two—is the core feature tying all its members together. It sits squarely within the field of psychiatry and is classified by both the DSM and ICD systems.
How does Mood disorder's story end?
There is no single ending; prognosis varies widely by subtype, from fully resolving episodes to chronic conditions that require ongoing management. Many subtypes, such as major depressive disorder or bipolar disorder, respond to medication, psychotherapy, or a combination of both.
Why is Mood disorder important?
It matters because mood-related conditions are among the most common reasons people seek psychiatric care worldwide. Recognizing the category helps clinicians tell, for example, a depressive episode apart from a manic one, which leads to very different treatment paths.
What are Mood disorder's subtypes?
The seven groups include major depressive disorder, bipolar disorder, dysthymia, cyclothymia, and several other syndromes with milder or more specific symptom profiles. They span the full range from full-blown mania and depression to less severe, more persistent mood shifts.
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