Editing Seasonal affective disorder (section)

== Criticism of disorder and diagnosis ==
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The validity of SAD has been called into question multiple times. A 2008 study indicated that some people stay without sun for months, yet they are not affected by SAD.<ref>{{Cite journal |last=Hansen |first=Vidje |last2=Skre |first2=Ingunn |last3=Lund |first3=Eiliv |date=June 2008 |title=What is this thing called “SAD”? A critique of the concept of seasonal affective disorder |url=https://doi.org/10.1017/s1121189x00002815 |journal=Epidemiologia e Psichiatria Sociale |volume=17 |issue=2 |pages=120–127 |doi=10.1017/s1121189x00002815 |issn=1121-189X}}</ref> A 2016 analysis from the [[Center for Disease Control|Centers for Disease Control]] found no links between depression, seasonality or sunlight exposure and suggested discontinuation of the diagnosis. Further, a 2018 study focusing on instability of SAD diagnosis criteria over prolonged periods of time, suggested that SAD is a temporary expression of a mood disorder rather than a specific disorder.<ref name="Traffanstedt et al., 2016" /><ref>{{Cite journal |last1=Cléry-Melin |first1=Marie-Laure |last2=Gorwood |first2=Philip |last3=Friedman |first3=Serge |last4=Even |first4=Christian |date=February 2018 |title=Stability of the diagnosis of seasonal affective disorder in a long-term prospective study |url=https://linkinghub.elsevier.com/retrieve/pii/S0165032717306201 |journal=Journal of Affective Disorders |language=en |volume=227 |pages=353–357 |doi=10.1016/j.jad.2017.11.014|pmid=29145077 }}</ref>