Major depressive episode

depressive episodedepressionmajor depressive episodesdepressivedepressive episodesdepressive phasedepressive episode,died in vainepisode of depressionperiods of depression
A major depressive episode (MDE) is a period characterized by the symptoms of major depressive disorder.wikipedia
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Major depressive disorder

depressionclinical depressionmajor depression
A major depressive episode (MDE) is a period characterized by the symptoms of major depressive disorder.
Some people have periods of depression separated by years in which they are normal, while others nearly always have symptoms present.

Seasonal affective disorder

winter bluesseasonal depressionSAD
Hypersomnia is often associated with an atypical depression, as well as seasonal affective disorder.
It is called a "course specifier" and may be applied as an added description to the pattern of major depressive episodes in patients with major depressive disorder or patients with bipolar disorder.

Mood disorder

depressionmood disordersdepressive disorder
* Major depressive disorder (MDD), commonly called major depression, unipolar depression, or clinical depression, wherein a person has one or more major depressive episodes.

Cyclothymia

cyclothymiccyclothymic disorderAffective personality disorder
Cyclothymia, also known as cyclothymic disorder, is a mental disorder that involves periods of symptoms of depression and periods of symptoms of hypomania.

Bipolar disorder

bipolarmanic depressionmanic depressive
Symptoms of the depressive phase of bipolar disorder include persistent feelings of sadness, irritability or anger, loss of interest in previously enjoyed activities, excessive or inappropriate guilt, hopelessness, sleeping too much or not enough, changes in appetite and/or weight, fatigue, problems concentrating, self-loathing or feelings of worthlessness, and thoughts of death or suicide.

Depression (mood)

depressiondepressedmelancholy
Sufferers primarily have a depressed mood for two weeks or more, and a loss of interest or pleasure in everyday activities, accompanied by other symptoms such as feelings of emptiness, hopelessness, anxiety, worthlessness, guilt and irritability, changes in appetite, problems concentrating, remembering details or making decisions, and thoughts of suicide.
These include major depressive disorder (MDD; commonly called major depression or clinical depression) where a person has at least two weeks of depressed mood or a loss of interest or pleasure in nearly all activities; and dysthymia, a state of chronic depressed mood, the symptoms of which do not meet the severity of a major depressive episode.

Dysthymia

chronic depressiondysthymic disorderdysthymic
Up to 25% of people who experience a major depressive episode have a pre-existing dysthymic disorder.

Pseudodementia

depression-induced cognitive dysfunctiondepressive pseudodementia
This is referred to as pseudodementia and often goes away with treatment.
Older people with predominantly cognitive symptoms such as loss of memory, and vagueness, as well as prominent slowing of movement and reduced or slowed speech, were sometimes misdiagnosed as having dementia when further investigation showed they were suffering from a major depressive episode.

Psychotic depression

depressive psychosisdelusional depressiondepression
Psychotic depression, also known as depressive psychosis, is a major depressive episode that is accompanied by psychotic symptoms.

Anxiety

anxiousnervousnessanxieties
Sufferers primarily have a depressed mood for two weeks or more, and a loss of interest or pleasure in everyday activities, accompanied by other symptoms such as feelings of emptiness, hopelessness, anxiety, worthlessness, guilt and irritability, changes in appetite, problems concentrating, remembering details or making decisions, and thoughts of suicide.

Insomnia

trouble sleepingsleeplessnessdifficulty sleeping
Insomnia or hypersomnia, aches, pains, or digestive problems that are resistant to treatment may also be present.

Hypersomnia

hypersomnolenceoversleepingexcessive sleepiness
Insomnia or hypersomnia, aches, pains, or digestive problems that are resistant to treatment may also be present.

Medical diagnosis

diagnosisdiagnosticdiagnostic criteria
The description has been formalized in psychiatric diagnostic criteria such as the DSM-5 and ICD-10.

DSM-5

DSM-Vmental health disordersDiagnostic and Statistical Manual of Mental Disorders
The description has been formalized in psychiatric diagnostic criteria such as the DSM-5 and ICD-10.

ICD-10

List of ICD-10 codesICD 10ICD10
The description has been formalized in psychiatric diagnostic criteria such as the DSM-5 and ICD-10.

Neurotransmitter

neurotransmittersexcitatory neurotransmitterneurotransmitter system
One interpretation is that neurotransmitters in the brain are out of balance, and this results in feelings of worthlessness and despair.

Cardiovascular disease

heart diseasecardiac diseasecardiovascular
In the United States and Canada, the costs associated with major depression are comparable to those related to heart disease, diabetes, and back problems and are greater than the costs of hypertension.

Diabetes

diabetes mellitusdiabeticdiabetics
In the United States and Canada, the costs associated with major depression are comparable to those related to heart disease, diabetes, and back problems and are greater than the costs of hypertension.

Hypertension

high blood pressurehypertensivearterial hypertension
In the United States and Canada, the costs associated with major depression are comparable to those related to heart disease, diabetes, and back problems and are greater than the costs of hypertension.

Psychotherapy

psychotherapistpsychotherapeutictherapy
Treatments for a major depressive episode include psychotherapy and antidepressants, although in more serious cases, hospitalization or intensive outpatient treatment may be required.

Antidepressant

antidepressantsanti-depressantanti-depressants
Treatments for a major depressive episode include psychotherapy and antidepressants, although in more serious cases, hospitalization or intensive outpatient treatment may be required.

Symptom

symptomsnon-specific symptomssymptomatic
A diagnosis of major depressive episode requires that the patient has experienced five or more of the symptoms below, and one of the symptoms must be either depressed mood or loss of interest or pleasure (although both are frequently present).

Pleasure

pleasantpleasurablerewarding
Interest or pleasure in everyday activities can be decreased; this is referred to as anhedonia.

Anhedonia

anhedonicinability to experience pleasurelack of deriving enjoyment
Interest or pleasure in everyday activities can be decreased; this is referred to as anhedonia.

Pessimism

pessimisticpessimistphilosophical pessimism
In addition, the person may experience one or more of the following emotions: sadness, emptiness, hopelessness, indifference, anxiety, tearfulness, pessimism, emotional numbness, or irritability.