| Infrared Photomodulation Therapy for Seasonal Affective Disorder (NCT04251000) | ProofPilot | 2020-02-27 |
| Optimizing Long-Term Outcomes for Winter Depression With CBT-SAD and Light Therapy (NCT03691792) | University of Vermont | 2018-09-01 |
| Seasonal Affective Disorder and Visual Impairment (NCT03403959) | Psychiatric Centre Rigshospitalet | 2017-12-01 |
| Investigation of Seasonal Variations of Brain Structure and Connectivity in SAD (NCT03313674) | Sunnybrook Health Sciences Centre | 2017-11-01 |
| Influence of Light Exposure on Cerebral MAO-A in Seasonal Affective Disorder and Healthy Controls Measured by PET (NCT02582398) | Medical University of Vienna | 2013-11-01 |
| The Role of Vitamin D Supplementation on Well Being and Symptoms of Depression During the Winter Season in Health Service Staff (NCT01462058) | Connie Thuree Nielsen, consultant, MD, ph.d | 2011-10-01 |
| Bright Light Therapy in Seasonal Affective Disorder (SAD) (NCT01293409) | University of Oulu | 2010-11-01 |
| Bright Light Therapy in Seasonal Affective Disorder (SAD) (NCT01030276) | University of Oulu | 2009-10-01 |
| A Trial of Negative Ion Generation Versus Light-Emitting Diode Phototherapy for Seasonal Affective Disorder (SAD) (NCT00809523) | Yale University | 2008-12-01 |
| Study of Genes in Relation to Seasonal Affective Disorder and Major Depressive Disorder (NCT01292889) | University of Pittsburgh | 2008-10-01 |
| Low Intensity 'Blue Light' Treatment of Seasonal Affective Disorder (NCT01149135) | University Medical Center Groningen | 2008-10-01 |
| Research Study of Treatment for Winter Depression With Different Colors of Light (NCT00269633) | Thomas Jefferson University | 2006-11-01 |
| Ramelteon in the Treatment of Sleep and Mood in Patients With Seasonal Affective Disorder (NCT00502320) | Lehigh Valley Hospital | 2006-09-01 |
| Blue Enriched Versus Standard Light Treatment for Seasonal Affective Disorder(SAD) (NCT01048294) | University Medical Center Groningen | 2005-10-01 |
| Light-Emitting Diode (LED) Light for Seasonal Affective Disorder (SAD) Treatment (NCT00114322) | Brigham and Women's Hospital | 2005-05-01 |
| Prevention of Seasonal Affective Disorder (NCT00046241) | GlaxoSmithKline | 2002-09-01 |
| Environmental Treatment for Seasonal Affective Disorder (SAD) (NCT00139997) | Yale University | 2002-01-01 |
| Clinical Trial of Propranolol for Seasonal Affective Disorder (NCT00016666) | National Institute of Mental Health (NIMH) | 2001-05-21 |
| Clinical Trials of Three Non-Drug Treatments for Winter Depression (SAD) (NCT00006517) | New York State Psychiatric Institute | 1998-09-01 |
| Effects of Season on Melatonin Secretion in Healthy Men and Women and Patients With Seasonal Affective Disorder (NCT00001485) | National Institute of Mental Health (NIMH) | 1995-06-01 |