William M. Klykylo and Jerald Kay
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a. A seasonal affective disorder diagnosis requires a temporal relationship between the onset of depression and the change in seasons and decrease in sunlight, with this pattern being duplicated in two separate years.
b. Adolescents can show more anxiety and auditory hallucinations than children.
c. A diagnosis of dysthymia in children and adolescents requires depression or irritability more days than not for a duration of at least 2 years.
d. The lifetime prevalence of depression is 20% by completion of adolescence.
e. Males are twice as likely as females to have depression.