Depression is not the same as a passing blue mood. Depression: An illness that involves the body, mood, and thoughts and that affects the way a person eats, sleeps, feels about himself or herself, and thinks about things. Great depression definition, the economic crisis and period of low business activity in the U.S. and other countries, roughly beginning with the stock-market crash in October, 1929, and continuing through most of the 1930s. It is not a sign of personal weakness or a condition that can be wished away. 2. However, depression can cause many symptoms in the body as well as mood problems. At the fronts between the air masses, a horizontal wave of warm air is enclosed on either side by cold air. 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. The AstraZeneca/Oxford University Covid-19 vaccine has reported interim results from a phase 3 trial showing the jab can prevent the majority of people from developing the disease. See more. Chapter 1 reviews the epidemiology of depression and bipolar disorder; the definition of the disorders; and psychological, social, and biological factors that have been shown to increase the risk of mood disorders in children and adolescents. It may be caused by genetic factors, conflicts, stressful life events or transitions, and loss of a loved one. Depression (also called major depressive disorder, unipolar depression or clinical depression) is a mental illness. Learn more about the symptoms, different types, and treatment options. n. 1. a. A legacy of the depression was a large rise in the number of long-term unemployed workers and the share of unemployment which was long term. Many people think that depression just means a person is very sad . The condition of being depressed. depression synonyms, depression pronunciation, depression translation, English dictionary definition of depression. 3. b. People with depression may experience a lack of interest and pleasure in daily activities, significant weight loss or gain, insomnia or excessive sleeping, lack of energy, inability to concentrate, feelings of worthlessness or excessive guilt and recurrent thoughts of death or suicide. Overview. The act of depressing. Depression is a common mental health problem that involves a low mood and a loss of interest in activities. Define depression. Depression is a mood disorder that causes a persistent feeling of sadness and loss of interest. People with depression cannot merely 'pull themselves together' and get better. This low is some 1 500–3 000 km in diameter and is associated with the removal of air at height and the meeting of cold and warm air masses in the lower atmosphere. An area that is sunk below its surroundings; a hollow. 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