seasonal depression; seasonal affective disorder
Medical/psychological term for depression that occurs at certain times of the year, typically winter. Often used synonymously with 季節性感情障害 (SAD).
See also: 季節性感情障害
If you feel down when winter comes, it could be seasonal depression.
She was diagnosed with seasonal affective disorder and started light therapy.
Standard modern spelling using うつ for depression.
Formal or older spelling using the full kanji 鬱; less common in everyday writing.
Compound of 季節性 (seasonal) + うつ病 (depression). A modern medical term, likely a calque from English 'seasonal depression' or 'seasonal affective disorder'.