Types based on season:
(1) winter (most common form)
(2) summer
(3) other
Symptoms (frequent or fairly frequent, Panel 2, page 1371, Partonen):
(1) social withdrawal
(2) decreased activity
(3) sadness
(4) anxiety
(5) carbohydrate craving
(6) decreased libido
(7) poor quality of sleep
(8) increased sleep
(9) irritability
(10) increased weight
(11) increased appetite
Other psychological conditions found in patients with SAD:
(1) eating disorders
(2) phobias and anxiety disorders
(3) avoidant personality disorder
ICD-10 Provisional Criteria:
(1) 3 or more episodes of an affective disorder for 3 or more consecutive years
(2) onsets and remissions within a particular 90 day period of the year
(3) seasonal episodes that substantially outnumber non-seasonal episodes
where:
• Since seasons vary depending on latitude, I am not sure that limiting onset and remission to a 90 day period is always feasible.
