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New Insights of Impairments and Disorders Associated to Seasonal Affective Disorder.

Teeuwen, Robby (2019) New Insights of Impairments and Disorders Associated to Seasonal Affective Disorder. Bachelor's Thesis, Life Science and Technology.

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SAD is a subtype of MDD, in which symptoms appear in autumn and winter, but disappear in spring and summer. It is thought that a shortage of light causes the symptoms of SAD. While SAD is a well-known disorder and some therapies inhibit the symptoms, no cure has been found yet due to its complexity. Apart from the common symptoms of SAD, other studies have found seasonal differences in their results. This means that SAD may potentially cause these differences and have more impairments than currently known. This review will be looking at what impairments and disorders are correlated with SAD. It is found, with 5 articles of the 3 past years (2017-2019) that cognitive impairments, self-perceived personality, SPS, alcohol abuse and OCD all have an association with SAD. Cognitive impairments are not only found during winter, but are also present during summer in individuals with SAD. Furthermore, a correlation between cognitive impairments and the severity of depression is also found. A higher neuroticism in summer was found to be correlated with a more severe depression during winter. Neuroticism also increases from summer to winter, where extraversion decreases from summer to winter. SPS is higher in individuals with SAD and are more frequently high trait SPS. SPS increases from summer to winter in individuals with SAD and a higher SPS in the summer is correlated with a more severe depression in the winter. Alcohol abuse and SAD have a correlation with each other, as well as cognitive impairment and SAD. Individuals with SAD more often have a history with alcohol abuse and have a worse short-term memory. Individuals with AUD and ADD show some SAD-like symptoms. OCD is more frequently found in individuals with SAD. Individuals with OCD showed more compulsions and a more severe depression in winter. Multiple impairments are found with SAD. While the most severe symptoms and impairments are found during winter, symptoms can also be found during summer. These summer impairments could be used to find potential individuals with SAD.

Item Type: Thesis (Bachelor's Thesis)
Supervisor nameSupervisor E mail
Zee, E.A. van
Degree programme: Life Science and Technology
Thesis type: Bachelor's Thesis
Language: English
Date Deposited: 15 May 2019
Last Modified: 17 May 2019 13:01

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