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Seasonal affective disorder

Also called: SAD and seasonal depression
A mood disorder characterized by depression that occurs at the same time every year.
  • Treatable by a medical professional
  • Medium-term: resolves within months
  • Usually self-diagnosable
  • Lab tests or imaging not required
Seasonal affective disorder often starts in the fall and may continue into the winter months.
Very common: More than 3 million US cases per year
Consult a doctor for medical advice Sources: Mayo Clinic and others. Learn more
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