Seasonal depression.
Seasonal affective disorders are mood disturbances that occur with a change in season. The most common form is winter depression, marked by sadness, anxiety, decreased physical activity, increased appetite, carbohydrate craving, weight gain, hypersomnia, decreased libido, worsening of premenstrual symptoms, impaired work performance and interpersonal conflict. This syndrome often responds to daily exposure to bright artificial light.
D000928:Antidepressive Agents / Q000627:therapeutic use; D003863:Depression / Q000523:psychology / Q000628:therapy*; D006801:Humans; D010789:Phototherapy; D012621:Seasons
D000928:Antidepressive Agents