• major depressive episode (BB)
• Major depressive dissorder (Dx)
• Dythymic Disorder (Dx)
• Seasonal Affective disorder (Dx)

Disorders of altering mood

• manic episode (BB)
• hypomanic episode (BB)
• bipolar 1 disorder (Dx)
• cyclothymic disorder

• for at least 2 weeks at least 5 to 9 symptoms are present.
• Subjective depression
• loss of interest/ anhedonia
• worthlessness/ excesive guilt
• sleep distubance (Insomia/ hypersomnia)
• appetite disturbance
• motor retardation/ motor agitation
• loss of energy/ easily fatigue
• concentration problems
• suicidality

Criteria:

• 1 or more major depressive episodes lifetime
• zero manic episodes lifetime

• for at least two years the oerson has experienced depressed mood for much of the day, on at least 50% of days.
• person has not been free of depresisive symptoms for 2 consectutive months
• no major depresive episodes
• 2 of 6 symptoms present on the depressed days:
• appetite change
• sleep problems
• low energy of fatigue
•  low self esteem
• poor concentration or impaired decision making skills
• feeling of...
  

• depressive episodes occur mainly during fall or winter
• 3 of 3
• 5 of 6
• not due to seasonal stressor
• prevenent on low sunlight
• normal functioning furing sunny months
• light therapty is a useful adjunctive intervention