Seasonal Depression across the Shrink Network.
The depression that tracks the calendar, covered from every angle.
Reviewed by Shariq Refai, MD, MBA
Seasonal depression (formally called Major Depressive Disorder with Seasonal Pattern, often abbreviated SAD) is a depression that tracks the light cycle. Symptoms begin in late fall, peak in the darkest months, and remit in spring. The pattern is consistent year over year. For people with classic SAD, the cluster of symptoms is recognizable enough that they often know it's coming before it arrives.
SAD has a specific feature profile that distinguishes it from year-round depression. Where typical depression often involves insomnia and appetite loss, SAD involves hypersomnia (sleeping much more than usual) and hyperphagia (eating more, especially carbohydrates). Energy is profoundly low. Social withdrawal is heavy. The cluster matches an evolutionary hibernation profile, which is part of why it's thought to track the light cycle.
Each site in the Shrink Network covers seasonal depression from a different angle. Shrinkopedia provides the clinical reference. DepressionResource provides the Seasonal Depression Map. PsychiatryRx covers the medications, including bupropion XL which has FDA approval specifically for prevention. shrinkMD provides the care option. This cluster page collects all seven layers.
Shrinkopedia
Seasonal Affective Disorder
The clinical encyclopedia entry. Criteria, the seasonal pattern requirement, the symptom profile (hypersomnia, hyperphagia, carb cravings), and the treatments with evidence.
Read on Shrinkopedia →DepressionResource
The Seasonal Depression Map
The visual cluster page. Late-fall onset, oversleeping, overeating, carb cravings, social withdrawal, energy crash, light deprivation, spring remission.
Open the Seasonal Depression Map →AnxietyResearch
Bright light therapy and seasonal depression
The evidence layer. What the research says about bright light therapy as first-line treatment, and the timing strategies (early-fall preventive vs. symptom-onset) that work best.
Open AnxietyResearch →PsychiatryRx
Bupropion XL and SSRIs for seasonal depression
The medication layer. Bupropion XL with FDA approval for prevention, SSRIs as alternatives, and the seasonal-only treatment strategies.
Open PsychiatryRx →shrinQ
When the season is the pattern
The pattern layer. Seasonal depression often runs alongside seasonal life patterns: fewer social plans, less daylight exposure, more isolation. shrinQ addresses the behavioral pattern side.
Open shrinQ →shrinkMD
Seasonal depression care at shrinkMD
The care option. Telepsychiatry with clinicians familiar with the seasonal pattern, including the early-fall preventive strategies and the treatment decision points.
Get care at shrinkMD →shariqrefai.com
On the depression that lifts in April
The reflective layer. Essays on the experience of knowing the cluster is coming, learning to plan around it, and the year-after-year recovery that arrives with longer days.
Read essays →Seasonal depression is one of the depression subtypes with the most specific evidence-based treatment paths. Bright light therapy, when started in early fall, can prevent the cluster from developing. The combination of light therapy and bupropion XL handles the majority of cases. The cluster above is the network's full coverage in one place, so the work of planning around a predictable seasonal pattern has all the resources in one stop.