noun
winter depression; seasonal affective disorder (winter type)
Refers to a type of depression that occurs during the winter months, often associated with reduced sunlight. In medical contexts, it corresponds to seasonal affective disorder (SAD) with winter pattern.
冬季うつ病の症状は、春になると自然に改善することが多い。
Symptoms of winter depression often improve naturally when spring comes.
Some people develop winter depression when daylight hours become shorter.