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The objective was to determine the research status and hotspots of seasonal affective disorders (SAD) based on bibliometric tools, which will contribute to the further research in this field. We used bibliometric tools CiteSpace and VOSviewer to conduct visual quantitative analysis on 465 SAD literatures in the Web of Science core database from 2008 to 2023 from multiple perspectives such as collaboration network, keywords, and literature citations. At the same time, we used Microsoft Word to make relevant tables.

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Article Synopsis
  • Seasonal affective disorder (SAD) can occur in summer as well, leading to episodes of depression characterized by low mood, fatigue, and loss of appetite that improve in winter.
  • A 46-year-old male patient was diagnosed with major depressive disorder with a seasonal pattern, experiencing recurrent summertime depression symptoms.
  • Treatment involved desvenlafaxine, achieving remission within four to six weeks, emphasizing the need to recognize seasonal affective disorders in warm climates and potential environmental triggers like heat stress.
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Pupillary response to blue light as a biomarker of seasonal pattern in Major Depressive Episode: A clinical study using pupillometry.

Psychiatry Res

December 2024

Département de psychiatrie et d'addictologie, AP-HP, GHU Paris Nord, DMU Neurosciences, Hôpital Bichat - Claude Bernard, F-75018 Paris, France; Université Paris Cité, NeuroDiderot, Inserm, FHU I2-D2, F-75019 Paris, France; Centre ChronoS, GHU Paris - Psychiatrie & Neurosciences, 1 rue Cabanis, 75014 Paris, France; CNRS UPR 3212 & Strasbourg University, Institute for Cellular and Integrative Neurosciences, F-67000, Strasbourg, France. Electronic address:

Depressive disorders are characterized by disturbances in light signal processing. More specifically, an alteration of the melanopsin response is suggested. The post-illumination pupillary response (PIPR) to blue light (post-blue PIPR) is increasingly used as a marker of the activity of intrinsically photosensitive melanopsin ganglion cells (ipRGCs).

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Depression affects about 280 million people globally and is marked by persistent sadness and impaired daily functioning. Sleep disturbances are prevalent in major depressive disorder, affecting roughly 90% of patients, and are linked to the severity and progression of depression. This review emphasizes the critical role of sleep in depressive disorders and evaluates the alternative treatments bright light therapy and sleep deprivation.

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Background: Seasonal retired migrants are mainly retired or semiretired people who migrate to warmer areas during the winter and then return to their original homes in the following year. Despite its increasing popularity, the evidence concerning the health status of Chinese seasonal retired migrants is controversial. Although some studies have shown that seasonal retired migrants have better health status, other studies note that migrants are driven involuntarily by health concerns and that their mental health suffers during migration.

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