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Related Experiment Video

Updated: Jul 18, 2026

A Method of Trigonometric Modelling of Seasonal Variation Demonstrated with Multiple Sclerosis Relapse Data

A Method of Trigonometric Modelling of Seasonal Variation Demonstrated with Multiple Sclerosis Relapse Data

Published on: December 9, 2015

Seasonal affective disorder.

Stephen J Lurie¹, Barbara Gawinski, Deborah Pierce

¹University of Rochester School of Medicine and Dentistry, Rochester, New York, 14620, USA. Stephen_Lurie@urmc.rochester.edu

American Family Physician

|November 23, 2006

Summary

Seasonal Affective Disorder (SAD) is a type of depression often missed in primary care. Early morning light therapy is a low-risk treatment, but its effectiveness compared to other therapies requires further study.

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Association Between Sleep Quality and Cognitive Symptoms in Patients with Major Depressive Disorder

Association Between Sleep Quality and Cognitive Symptoms in Patients with Major Depressive Disorder

Published on: April 26, 2024

Area of Science:

Psychiatry and Behavioral Sciences
Chronobiology

Background:

Seasonal Affective Disorder (SAD) is characterized by recurrent depressive episodes tied to specific seasons, most commonly winter.
SAD is likely underdiagnosed in primary care, similar to major depression.
Effective screening requires personalized attention to individual symptoms, not just available instruments.

Purpose of the Study:

To highlight the underdiagnosis of SAD in primary care.
To emphasize the importance of recognizing comorbid conditions associated with SAD.
To review current treatment options, particularly light therapy.

Main Methods:

Review of existing literature on Seasonal Affective Disorder diagnosis and treatment.
Discussion of comorbid factors such as alcoholism and ADHD.
Evaluation of light therapy as a primary treatment modality.

Main Results:

Light therapy is an effective treatment for SAD with a low risk of adverse effects.
Morning administration of light therapy enhances its efficacy.
Emerging evidence links SAD with alcoholism and attention-deficit/hyperactivity disorder (ADHD).

Conclusions:

Physicians need increased awareness of SAD and its potential comorbidities.
Personalized assessment is crucial for improving outcomes in SAD patients.
Further research is needed to compare light therapy with pharmacotherapy and cognitive behavioral therapy (CBT).