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

    Oct 14, 2022 · Also called major depressive disorder or clinical depression, it affects how you feel, think and behave and can lead to a variety of emotional and physical problems. You may have …

  2. Major depressive disorder - Wikipedia

    Major depressive disorder (MDD), also known as clinical depression, is a mental disorder [10] characterized by at least two weeks of pervasive low mood, low self-esteem, and loss of …

  3. Clinical Depression (Major Depressive Disorder): Symptoms

    Nov 30, 2022 · Clinical depression, also known as major depressive disorder (MDD), is a mental health condition that causes a persistently low or depressed mood and a loss of interest in …

  4. Depression (Major Depressive Disorder): Symptoms and More

    Jul 5, 2025 · Major depressive disorder (MDD) is a common mood disorder characterized by persistent sadness and a loss of interest in activities, impacting mood, behavior, and physical …

  5. Major Depressive Disorder | National Alliance on ... - NAMI

    When more severe symptoms like lack of energy and hopelessness develop in multiple areas of a person’s life along with persistent sadness over at least two weeks, they may be experiencing …

  6. Major Depressive Disorder (MDD) - MentalHealth.com

    Aug 7, 2025 · Major Depressive Disorder (MDD) is a common but serious mental health condition. This is more than just feeling sad or going through a rough patch; it’s a medical illness that …

  7. Psychiatry.org - What Is Depression?

    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.

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

    Depression (also called major depressive disorder or clinical depression) is different. It can cause severe symptoms that affect how you feel, think, and handle daily activities, such as sleeping, …

  9. Major Depressive Disorder: Symptoms, Causes, Treatment

    Dec 11, 2025 · What Is Major Depressive Disorder? Major depressive disorder (MDD) is a serious mood disorder causing mild to severe symptoms that persist for two weeks or longer and …

  10. Major Depression - Johns Hopkins Medicine

    Depression is a serious mood disorder that affects your whole body, including your mood and thoughts. It touches every part of your life. It’s important to know that depression is not a …