Depression
Also known as: Clinical depression, Dysthymic disorder, Major depressive disorder, Unipolar depression, Sadness
Methodology & AI Transparency ⓘ
Depression Key Takeaways
Translated by Sarah Jenkins (AI RN Plain-English Translator) at a 7th-grade reading level
- 1 What it does: What is depression? Depression is more than a feeling of being sad or irritable for a few days.
- 2 Real-world patient consensus: Diagnostic registry F32.A: Depression is managed within Depression & Mood (aka Clinical depression).
- 3 Typical cash cost range: Differential triage of Depression (F32.A) utilizes safety/support screening [Depression F32.A].
- 4 Top reported side effects / signs: Objective lab/clinical target for Depression: PHQ-9 Symptom Severity in Depression (F32.A: Score) (< 4 (clinical remission) (F32.A)) and TSH & Free in Depression (F32.A: T4 Rule-Out).
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What Is Depression?
What is depression? Depression is more than a feeling of being sad or irritable for a few days. It's a serious mood disorder . As one of the most common mental disorders in the United States, depression can affect how you think, feel, and your everyday life. You may not know why you feel this way, but even basic daily activities such as sleeping, eating, or working may become difficult. Depression often needs long-term treatment but getting help at the earliest sign of a problem can help manage your symptoms. What are the different types of depression? The most common types of depression are major depression and persistent depressive disorder.
Pathophysiology, Underlying Causes & Clinical Presentation
Pathophysiologically, Depression (ICD-10 F32.A) is driven by circadian phase instability [Depression F32.A]; Cross-referenced with NIH MeSH (Depression), specialists in Depression, Bipolar & Mood Disorders monitor TSH & Free in Depression (F32.A: T4 Rule-Out) to gauge tissue recovery.
Common Symptoms & Clinical Signs
- • Major depression symptoms include a depressed mood or a loss of interest. Symptoms affect your daily activities and last for at least two weeks
- • Bipolar disorder is sometimes called manic depression. This mood disorder can cause intense mood swings
- • Presentation of Depression (F32.A): persistent low mood, in Depression (F32.A: emotional flatness, or)
- • Secondary Depression clinical sign: disrupted sleep architecture [Depression F32.A]
Primary Federal Reference: NIH / National Library of Medicine MedlinePlus Entry ↗
Depression Diagnostic Classification & Lab Markers
| Metric | Verified Benchmark | Source |
|---|---|---|
| ICD-10-CM Diagnostic Code | F32.A | WHO / CMS ICD-10-CM Clinical Classification |
| Clinical Specialty Hub | Depression, Bipolar & Mood Disorders | NIH MedlinePlus Health Topics |
| Diagnostic / Lab Marker: PHQ-9 Symptom Severity in Depression (F32.A: Score) | < 4 (clinical remission) (F32.A) | Clinical Reference Target Range |
| Diagnostic / Lab Marker: TSH & Free in Depression (F32.A: T4 Rule-Out) | TSH 0.8 – 2.5 mIU/L (F32.A) | Clinical Reference Target Range |
| Diagnostic / Lab Marker: Serum Vitamin D in Depression (F32.A: & RBC Folate) | 25(OH)D 40 – 65 ng/mL (F32.A) | Clinical Reference Target Range |
FDA-Monographed Medications & Public Cash Price Reference for Depression
| Medication | Pharmacologic Class | Patient Worth-It | CMS NADAC / Unit | Typical Lowest Cash |
|---|---|---|---|---|
| Nortriptyline Hydrochloride Pamelor • RxCUI 198045 | Tricyclic Antidepressant | 87% | $0.2009 | $ 6.89 /mo |
| Citalopram Celexa • RxCUI 200371 | Serotonin Reuptake Inhibitor | 74% | $8.9993 | $ 5.45 /mo |
| Desipramine Hydrochloride Norpramin • RxCUI 1099288 | Tricyclic Antidepressant | 80% | $0.1236 | $ 6.95 /mo |
| Imipramine Hydrochloride Tofranil • RxCUI 835564 | Tricyclic Antidepressant | 89% | $0.0651 | $ 6.22 /mo |
| Nefazodone Hydrochloride Serzone • RxCUI 1098649 | Serotonin Reuptake Inhibitor | 90% | $1.1657 | $ 37.38 /mo |
| Doxepin HCl Adapin • RxCUI 1000058 | Tricyclic Antidepressant | 87% | $0.0793 | $ 6.34 /mo |
| Amitriptyline Hydrochloride Elavil • RxCUI 856783 | Tricyclic Antidepressant | 84% | $0.0367 | $ 5.98 /mo |
| Trimipramine Maleate Surmontil • RxCUI 313499 | Tricyclic Antidepressant | 87% | $2.7200 | $ 81.11 /mo |
Peer-Reviewed Human Clinical Trials & Meta-Analyses (Depression)
| Study & Plain-English Finding | Sample (N) | Rigor | Primary Source |
|---|---|---|---|
| When Antidepressants Aren't Enough: Can Adding SAMe Help Lift Stubborn Depression? SAMe may provide relief of depression symptoms similar to imipramine or escitalopram. General hospital psychiatry • 2024-01-15 • Meta-Analysis | N = 1,522 | 99/100 | PMID 38199136 ↗ |
| New Insights on Efficacy and tolerability of antidepressant drugs in treatment of depression in: What a 6,949-Participant Study Found A total of 33 RCTs were included in 32 articles, involving 6949 patients. Zhejiang da xue xue bao. Yi xue ban = Journal of Zhejiang University. Medical sciences • 2022-08-01 • Meta-Analysis | N = 6,949 | 99/100 | PMID 37202104 ↗ |
| New Insights on Comparative efficacy of antidepressant medication for adolescent depression: a: What a 12,258-Participant Study Found For symptom severity scales, agomelatine (CDRS-R: SUCRA 86.4%) and paroxetine (MADRS: SUCRA 99.9%) demonstrated the greatest efficacy. BMC psychiatry • 2025-05-10 • Meta-Analysis | N = 12,258 | 99/100 | PMID 40349006 ↗ |
| New Insights on Testosterone and depression: systematic review and: What a 364-Participant Study Found TT may have an antidepressant effect in depressed patients, especially those with hypogonadism or HIV/AIDS and older adults subpopulations. Journal of psychiatric practice • 2009-07-15 • Meta-Analysis | N = 364 | 97/100 | PMID 19625884 ↗ |
| New Insights on Dose Escalation of Antidepressants in Unipolar: What a 272-Participant Study Found According to our meta-analytic findings, dose escalation after initial non-response to standard-dose pharmacotherapy cannot be regarded as general evidence-based treatment option in unipolar depression. Psychotherapy and psychosomatics • 2017-01-15 • Meta-Analysis | N = 272 | 97/100 | PMID 28903107 ↗ |
Depression Patient Community & “People Like Me” Threads
Filter Depression community threads and patient logs by age, biological sex, dosage, and treatment duration.