Seasonal Affective Disorder (SAD)
Depression that occurs at specific times of the year, usually in winter when there's less natural sunlight.
Prevalence: 5% of U.S. adults. 4 times more common in women. More common in northern states.
Common Symptoms
- Depression that begins in fall/winter
- Remission in spring/summer
- Low energy and fatigue
- Oversleeping (hypersomnia)
- Overeating, especially carbohydrates
- Weight gain
- Social withdrawal ('hibernation')
- Difficulty concentrating
- Feelings of hopelessness
- Loss of interest in activities
- Irritability
- Heavy, leaden feeling in arms/legs
- Pattern repeats yearly
- More severe in northern latitudes
- Some have summer SAD (rare)
Risk Factors
- Living far from equator
- Family history of SAD or depression
- History of depression or bipolar disorder
- Younger age
- Female gender
Treatment Approaches
- Light therapy (first-line treatment)
- Cognitive Behavioral Therapy adapted for SAD
- SSRIs (if light therapy insufficient)
- Bupropion (Wellbutrin) particularly effective
- Preventive treatment starting before winter
- Dawn simulation
Self-Help & Natural Approaches
- Light therapy (10,000 lux, 30 min/day in morning) - MOST EFFECTIVE
- Maximize natural sunlight exposure
- Regular outdoor activities
- Exercise especially outdoors
- Maintain social activities
- Plan pleasant winter activities
- Dawn simulator alarm clocks
- Keep rooms bright
- Vitamin D supplementation
- Regular sleep schedule
When to Seek Professional Help
- Symptoms interfere with daily functioning
- Unable to work or maintain relationships
- Suicidal thoughts
- Severe oversleeping or overeating
- Complete social withdrawal
Crisis Resources
- 988 Suicide & Crisis Lifeline
- Crisis Text Line: Text HELLO to 741741
- SAMHSA National Helpline: 1-800-662-4357
This information is for educational purposes only and is not a substitute for professional medical advice, diagnosis, or treatment.