Seasonal Affective Disorder (SAD)

https://www.ncbi.nlm.nih.gov/pubmed/23852105


https://www.ncbi.nlm.nih.gov/pubmed/8422217

https://www.psychiatryadvisor.com/home/topics/mood-disorders/bipolar-disorder/manic-episode-inpatient-admissions-appear-to-peak-during-summer/

https://www.medicalnewstoday.com/articles/86620.php

https://www.medicalnewstoday.com/articles/86620.php

https://www.mayoclinic.org/diseases-conditions/bipolar-disorder/expert-answers/bipolar-treatment/faq-20058042