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This is your diagnosis of Eldin, based on the following information: Eldin presented to your clinic with low mood, loss of interest and pleasure, loss of appetite, lethargy, and complaints of sleeping too much without feeling rested. According to Eldin, his low mood began around Halloween of this year. When you questioned him further, you discovered that this is a longstanding pattern for him, in which his low mood and the other symptoms seem to reappear nearly every year around the same time and typically dissipate on their own around March or early April.
What is Seasonal Affective Disorder?