Hub

Depression

Everything Shrinkopedia knows about depression, in one place.

Reviewed by Shariq Refai, MD, MBA

Depression contains more variation than its single name suggests: high-functioning patterns, postpartum, seasonal, depression with anxiety, treatment-resistant. This hub exists to give the category a single clinical landing page that names the variations and points to what's known about each.

Depression isn't one diagnosis. It's a category that holds major depressive disorder, persistent depressive disorder, postpartum depression, seasonal affective disorder, premenstrual dysphoric disorder, and the depressive episodes that show up inside bipolar disorder and schizoaffective disorder.

The experiences inside depression, anhedonia, fatigue, hopelessness, brain fog, guilt, suicidal thoughts, overlap heavily but track to different underlying conditions. Getting the right condition matters because the treatments differ.

This hub is the map. It points you to the condition entries, the symptom explanations, the treatments with evidence, and the glossary terms that connect them. Read whatever's most relevant first.

Conditions

Condition

Major depressive disorder

What depression really is, the symptoms to know, why it happens, and what treatment looks like.

Strong Condition

Persistent depressive disorder

A long-lasting form of depression, present most days for two years or more.

Strong Condition

Premenstrual dysphoric disorder

A severe, cyclical depressive disorder tied to the menstrual cycle, with marked mood symptoms in the week or so before a period that ease soon after it starts.

Strong Condition

Postpartum depression

What postpartum depression is, how it differs from the baby blues, the symptoms, and what treatment helps.

Strong Condition

Seasonal affective disorder

Depressive episodes that recur at a certain time of year, most often fall and winter, with remission otherwise.

Mixed Condition

DMDD (disruptive mood dysregulation disorder)

A childhood condition of severe, frequent temper outbursts and a constantly irritable mood in between.

Limited Condition

Bipolar disorder

What bipolar disorder is, how mania and depression show up, bipolar I versus II, and what treatment looks like.

Strong Condition

Schizoaffective disorder

What schizoaffective disorder is, how it differs from schizophrenia and bipolar disorder, and what evidence-based treatment can offer.

Mixed Condition

Adjustment disorder

Emotional or behavioral symptoms in response to a clear stressor, more than ordinary stress but not major depression.

Mixed

Planned coverage (6)

Treatment resistant depression
Atypical depression
Melancholic depression
Psychotic depression
Substance or medication induced depressive disorder
Depressive disorder due to another medical condition

Symptoms

Planned coverage (9)

Worthlessness
Insomnia
Hypersomnia
Weight changes
Appetite changes
Psychomotor changes
Concentration difficulty
Low motivation
Crying spells

Treatments

Planned coverage (10)

Atypical antidepressants
Tricyclic antidepressants
MAO inhibitors
Bupropion
Mirtazapine
Esketamine
Mindfulness based cognitive therapy
Bright light therapy
Brexanolone
Zuranolone

Glossary

Planned coverage (7)

Anhedonia
Serotonin
Norepinephrine
Dopamine
BDNF
Recurrence
Discontinuation syndrome

Treatment Overview

Depression treatment is well evidenced and effective for most patients who stick with care. The two first line approaches are antidepressant medication (most often an SSRI or SNRI) and a structured psychotherapy (cognitive behavioral therapy, behavioral activation, or interpersonal therapy). The combination usually outperforms either alone, especially for moderate to severe depression. About one in three patients reach remission on the first antidepressant trial. Another one in three reach remission on the second. For patients whose depression doesn't respond to two adequate antidepressant trials (the definition of treatment resistant depression), augmentation strategies (lithium, atypical antipsychotic augmentation, thyroid hormone) have evidence. TMS is FDA approved for treatment resistant depression. Intranasal esketamine (Spravato) is FDA approved as augmentation for treatment resistant depression and acts within days rather than weeks. ECT remains the most effective single treatment for severe depression. For postpartum depression, sertraline is best studied in breastfeeding, and brexanolone and zuranolone are FDA approved specifically for postpartum depression. For seasonal depression, bright light therapy started in early fall has strong evidence. Bipolar depression, which can look identical to unipolar depression from the outside, requires mood stabilizers rather than antidepressants alone.

Resources and Support Organizations

The organizations below are independent of Shrinkopedia and the Shrink Network. We list them because they're recognized national resources, not because we have any financial or organizational relationship with them. Most are free at the point of access.

DBSA (Depression and Bipolar Support Alliance) National peer support and education organization for mood disorders. Hosts free peer led support groups across the country. dbsalliance.org
NAMI (National Alliance on Mental Illness) Free peer support, family education, and helpline. nami.org · Helpline 1-800-950-6264
Postpartum Support International (PSI) National nonprofit for perinatal mental health, including postpartum depression and anxiety. Free helpline and a directory of perinatally trained providers. postpartum.net · Helpline 1-800-944-4773
Mental Health America (MHA) Free screening tools and educational resources. mhanational.org
The Trevor Project Crisis support and resources for LGBTQ+ young people, who experience higher rates of depression and suicidality. thetrevorproject.org · 1-866-488-7386
988 Suicide and Crisis Lifeline Free, confidential, 24 hours a day in the United States for any mental health crisis. Call or text 988
SAMHSA National Helpline Free, confidential treatment referral and information service for individuals and families facing mental health or substance use disorders. 1-800-662-4357 (HELP)
Find Treatment (SAMHSA) Federal directory of evidence based mental health and substance use treatment providers, searchable by location and insurance. findtreatment.gov

Adjacent hubs

Depression overlaps heavily with anxiety, bipolar (when episodes alternate), trauma, and sleep disruption. These adjacent hubs cover the overlap.

Anxiety Hub Bipolar Hub Trauma Hub Sleep Hub

Across the network

DepressionResource Depression. Understood. → The practical layer: what depression feels like, what to do, what helps. PsychiatryRx Medications. Explained. → SSRIs, SNRIs, and the medication options that have evidence. shrinkMD Get care at shrinkMD → Telepsychiatry for depression. Board-certified care. shariqrefai.com Essays on staying well → From Shariq Refai: long-form reading on depression, treatment, and recovery.

Network coverage at a glance

How the network covers this topic.

The Shrink Network covers this topic at multiple layers. Below is a quick map of which site does what for this category. For the full cross-network cluster view, see the matching Network Cluster at /clusters/.

Library Shrinkopedia

Practical DepressionResource

Evidence AnxietyResearch

Medication PsychiatryRx

Patterns shrinQ

Language Shrinktionary

Daily ShrinkDaily

Care shrinkMD

Essays Shariq Refai

See the full cross-network cluster for this topic at /clusters/major-depressive-disorder/

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