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What is Major Depressive Disorder

Mental Health and Wellness in Healthcare Workers: Identifying Risks, Prevention, and Treatment
Major depressive disorder (MDD), also known simply as depression, is a mental disorder characterized by at least two weeks of pervasive low mood, low self-esteem, and loss of interest or pleasure in normally enjoyable activities. Those affected may also occasionally have delusions or hallucinations. Introduced by a group of US clinicians in the mid-1970s, the term was adopted by the American Psychiatric Association for this symptom cluster under mood disorders in the 1980 version of the Diagnostic and Statistical Manual of Mental Disorders (DSM-III) classification, and has become widely used since.
Published in Chapter:
Perceived Stress Levels of Medical and Non-Medical Staff in the Face of COVID-19
Sajedeh Rabipour (Islamic Azad University, Dubai, UAE)
DOI: 10.4018/978-1-7998-8813-0.ch002
The sudden outbreak of COVID-19 as a deadly disease worldwide has caused widespread psychological problems as well as physical problems. Due to the importance of prevention and control of psychological problems in exposed individuals, the present study was conducted to investigate the perceived stress of medical and non-medical staff in the face of the epidemic of COVID-19 disease. 90.2% of the subjects had moderate job stress and 4.2% had severe stress. The level of stress in students was higher than formal and contract employees. Also, women had more stress than men, and people with medication, people without medication, and people with medical occupations more than non-medical occupations. Vulnerable groups in society, such as women, students, and healthcare workers, need more prevention and care in the COVID-19 crisis, which should be strengthened over time as effective coping strategies and disease epidemic management, access to medical resources, and mental health systems also plan national strategies and first aid in crises through telemedicine and online services.
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Web-Based Psychotherapy and Exercise Interventions for Depressive and Anxiety Disorders
Presents symptoms (e.g., fatigue, hypersomnia or insomnia, concentration difficulties and feelings of worthlessness) occurring for two weeks. It is characterized by depressed mood or lower pleasure or interest in almost all the daily activities.
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Common Academic Stress Points and Mental Health Concerns Among Pre-Health and Health Science Students
More commonly referred to as depression, major depressive disorder is a mood disorder that “causes a persistent feeling of sadness and loss of interest… it affects how you feel, think, and behave and can lead to a variety of emotional and physical problems'' (Mayo Clinic Staff, 2018, pp. 1). Depression may result in difficulties carrying out activities of daily living and can be experienced along a spectrum of emotions, from sadness to anger or emptiness. Often, depression requires specific therapeutic care from mental health practitioners.
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The Management of Cancer and Depression in People With Intellectual Disabilities: Overcoming Barriers to Improve Care
This is characterized by depressed mood or lack of interest or pleasure in almost of all daily activities. Symptoms are: fatigue, insomnia or hypersomnia, feelings of uselessness and concentration difficulties that take place for two weeks.
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The Use of an Online Escape Room in Psychodiagnostics: An Exploratory Project With Postgraduate Psychology Students
A mental disorder characterized by low mood, loss of interest in everyday activities, lack of pleasure experience and lack of self-care, affecting the person’s everyday functioning.
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