Bright Light Therapy in Seasonal Affective Disorder (SAD)

Inclusion Criteria:

• a patient has (according to the Diagnostic and Statistical Manual of Mental Disorders,fourth edition, text revision [DSM-IV-TR]) a Major depression, recurrent episode, seasonalpattern, "moderate" or "severe" (classification code 296.32 and 296.33) The 29-item Structured Interview Guide for Hamilton Depression Rating Scale - SeasonalAffective Disorder Version (SIGH-SAD) score ≥ 20

• The 29-item Structured Interview Guide for Hamilton Depression Rating Scale - SeasonalAffective Disorder Version (SIGH-SAD) score ≥ 20

• The 21-item Hamilton Depression Rating Scale score ≥ 10

• The 8-item atypical symptom score ≥ 5

• patient is over 18 years

• patient can read and understand the subject information sheet

• patient has signed the informed consent form

• patient is not pregnant

Exclusion Criteria:

• patient has a lifetime psychotic disorder

• patient has a DSM-IV Axis I disorder other than some anxiety disorder evaluated byMINI

• patient has some DSM-IV-TR Axis II disorder, which is likely to interfere with thestudy treatment according to the investigator

• patient has alcohol or some other substance use dependence or misuse

• patients has some unstable somatic disorder

• patient uses some psychotropic agencies

• patient is, in the opinion of the investigator, unsuitable for any reason

• patient is a member of the site personnel or their immediate families

• patient has had bright light therapy via ear canals during the current episode