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A. Early recognition : Symptoms of depression have been observed and documented throughout history, albeit under different names and understandings. Ancient civilizations, such as the Greeks and Egyptians, recognized the existence of melancholia and its impact on individuals' mental and emotional well-being.
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B. Diagnostic advancements : The formal classification of Major Depressive Disorder as a specific mental health condition emerged in the 20th century. The Diagnostic and Statistical Manual of Mental Disorders (DSM) has undergone revisions over the years to refine diagnostic criteria and enhance understanding of MDD.