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  1. Depression (major depressive disorder) - Symptoms and causes

    Mar 14, 2026 · Depression is a mood disorder that causes a persistent feeling of sadness and loss of interest. Also called major depressive disorder or clinical depression, it affects how you feel, think …

  2. Depression: Causes, Symptoms, Types & Treatment

    Depression is a mood disorder that causes a persistent feeling of sadness and loss of interest in things and activities you once enjoyed. It’s treatable.

  3. Depressive disorder (depression) - World Health Organization (WHO)

    Aug 29, 2025 · WHO fact sheet on depression, providing information on prevalence, symptoms, prevention and contributing factors, diagnosis and treatment, and WHO's work in the area.

  4. Depression - National Institute of Mental Health (NIMH)

    Information about depression including the different types of depression, signs and symptoms, diagnosis, treatment options, and how to find help.

  5. Depression | Definition, Symptoms, Causes, & Treatment | Britannica

    4 days ago · Depression, in psychology, is a mood or emotional state marked by feelings of low self-worth or guilt and a reduced ability to enjoy life. Depression differs from simple grief or mourning and …

  6. 14 common signs and symptoms of depression - Medical News Today

    Jul 11, 2025 · Depression is a common and serious mental health condition. In this article, learn about 14 of the common symptoms.

  7. Depression: What It Is, Symptoms, Causes, Treatment, and More

    Oct 27, 2023 · Learn the causes, symptoms, and treatments of depression, and how it can affect people differently.

  8. What Is Depression? - Psychiatry.org

    Depression (major depressive disorder) is a common and serious medical illness that negatively affects how you feel, the way you think and how you act. Fortunately, it is also treatable.

  9. Depression Overview - Harvard Health

    Mar 8, 2026 · Depression is more than a passing bout of sadness or dejection, or feeling down in the dumps. It can leave you feeling continuously burdened and can sap the joy out of once-pleasurable …

  10. All About Depression: Symptoms, Types, and Treatments - Psych Central

    Feb 22, 2021 · Here's everything you might want to know about depression, including diagnosis and symptoms, types, causes, treatments, and how to help someone with depression.

  11. Depression - MedlinePlus

    Jun 30, 2025 · Depression is a serious medical illness. It affects almost 7 percent of U.S. adults. It causes feelings of sadness, hopelessness, and frustration that do not go away. Learn about treatments.