Summer seasonal affective disorder (RSAD) is a form of clinical depression that affects an estimated 0.57% of people, according to an analysis of multiple studies. Unlike winter SAD, which triggers low moods during cold months, RSAD manifests as anxiety, insomnia, and fatigue during the heat of summer.
What causes summer seasonal affective disorder?
Melatonin levels drive the sleep-wake cycle and are central to both winter and summer seasonal depression.
This deficiency often stems from shorter nights and longer daylight hours. High temperatures further disrupt sleep patterns, creating a cycle of exhaustion and irritability. For some, the cause is physiological; Lachrista Greco, a writer and librarian diagnosed by her psychiatrist, attributes her condition to a combination of heat, extra daylight, and seasonal allergies.
How do summer depression symptoms differ from winter SAD?
Both conditions share signs of clinical depression, but the physical manifestations often flip. People with winter SAD typically overeat and crave carbohydrates. In contrast, those with summer SAD often experience a loss of appetite, according to reports on the condition.
Common symptoms that emerge in late spring or early summer include:
- Increased anxiety and irritability
- Insomnia and restlessness
- Chronic fatigue and lack of motivation
- Social isolation
Why does the “summer vibe” trigger anxiety?
Psychological pressures often compound the biological triggers of RSAD. The “fear of missing out” (FOMO) is a primary driver. Sophia Marren, who suffers from summertime sadness, told The Post that the pressure to be active and “enjoy” the weather creates a feeling of falling behind in life.
Other contributors include:
- Body Image: Anxiety over wearing less clothing in warmer weather.
- Financial Stress: The cost of planning vacations and summer travel.
- Lifestyle Shifts: Changing schedules for seasonal workers, such as teachers.
- Inflammation: Seasonal allergies that can correlate with mood drops.
- Substance Use: Increased alcohol consumption during summer months, which can fuel depression.
How is summer SAD managed?
Because RSAD is not yet a formally recognized medical diagnosis, it is often treated as a subset of seasonal affective disorder. Management typically focuses on stabilizing the sleep-wake cycle and mitigating the effects of heat and light exposure.
Patients like Lachrista Greco work with psychiatrists to manage the condition, emphasizing the need for environments that feel safe and cool—such as preferring a “soft snowpile” over the summer sun.
Frequently Asked Questions
Is summer depression a real medical diagnosis?
It is not currently a formally recognized medical diagnosis, though it presents the same clinical signs and symptoms as winter seasonal affective disorder.
Who is most likely to get summer SAD?
While it affects a small percentage of the population (0.57%), it is common among those sensitive to light changes, people with severe seasonal allergies, and those prone to insomnia during heatwaves.
Does summer SAD cause weight gain?
Generally, no. Unlike winter SAD, which is associated with increased appetite, summer SAD is often linked to a loss of appetite.
Do you experience a drop in mood when the temperature rises? Share your experience in the comments below or subscribe to our newsletter for more health insights.