MDD called as “Major depressive disorder," and called with different names as clinical depression, major depression, unipolar depression, or unipolar disorder. It is a serious clinical mood disorder in which frustration, loss, or anger interferes with a person′s everyday life, feelings of sadness. Symptoms include irritability, difficulty with concentration, feelings of hopelessness, feelings of worthlessness, guilt, or self-hate, social isolation, and loss of interest, sleep problems (insomnia or excessive sleeping).
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