noun
seasonal affective disorder; SAD
Psychiatric term for a mood disorder with seasonal pattern, typically depression in winter. The abbreviation SAD is also used in Japanese medical contexts.
See also: 季節性情動障害
季節性気分障害は、冬に症状が現れることが多い。
Seasonal affective disorder often shows symptoms in winter.
医師は彼女に季節性気分障害の可能性があると診断した。
The doctor diagnosed her with possible seasonal affective disorder.
Synonymous term also used in psychiatry; 気分障害 emphasizes mood, while 情動障害 emphasizes emotion.
Compound of 季節性 (seasonal) + 気分 (mood) + 障害 (disorder), a direct translation of the English medical term 'seasonal affective disorder'.