Seasonal Depression Quiz
Seasonal Affective Disorder (SAD), often known as seasonal depression, is a recurring depressive disorder that typically manifests during the colder, darker months of the year. Around 5% of the U.S. Population suffers with SAD. This condition significantly impacts daily functioning, mood, and overall well-being.
What is Seasonal Affective Disorder (SAD)?
Seasonal Affective Disorder (SAD) is a type of depression that emerges seasonally, primarily during the fall and winter months when natural sunlight is diminished. It is recognized as a major depressive disorder with a seasonal pattern, which can significantly impact the daily lives of those affected. Unlike other forms of depression, the onset of SAD coincides with specific seasonal changes, primarily related to the reduced exposure to sunlight that comes with shorter days and longer nights.
The disorder is thought to be triggered by the disruption in the body’s internal clock or circadian rhythms, a key regulator of the sleep-wake cycle. Sunlight plays a critical role in resetting the body’s daily rhythms, and the lack of sunlight during winter can lead to misalignment and disruption of biological processes. Additionally, the reduction in sunlight can cause a drop in serotonin levels, a neurotransmitter that regulates mood, appetite, and sleep, contributing further to depressive symptoms. Moreover, the change in seasons can disrupt the balance of melatonin, a hormone that plays a role in sleep patterns and mood.
Seasonal Depression Self-Assessment
How Seasonal Depression Varies from Regular Depression
While the symptoms of seasonal depression are similar to those of non-seasonal depression, the key differentiator is the timing of the onset. Seasonal depression is directly tied to specific times of the year, typically beginning in late fall and early winter and remitting during the spring and summer months. This pattern of depression is crucial for diagnosis and distinguishes SAD from other forms of depression, where symptoms might not follow a temporal pattern.
Furthermore, the specific symptoms related to changes in sleep and eating patterns are more pronounced in SAD than in non-seasonal depression. The craving for carbohydrates and increased sleep are physiologically linked to the body’s response to shorter daylight hours and colder temperatures, reflecting the seasonal nature of this disorder.
Recognizing these signs and understanding how they manifest uniquely in SAD can guide individuals and their families to seek appropriate treatment early.
Seasonal Affective Disorder in Winter vs. Summer
Winter-Onset SAD
Winter SAD is the more recognized form of seasonal depression, linked primarily to the reduced level of sunlight during the late autumn and winter months when days are shorter. The lack of sunlight can disrupt the body’s internal clock or circadian rhythm, decrease the production of serotonin—a neurotransmitter that regulates mood—and affect melatonin levels, which impact sleep patterns and mood.
Symptoms of winter SAD often include:
- Increased sleep and daytime drowsiness: Individuals may experience hypersomnia, finding it difficult to stay awake during the day or requiring much longer hours of sleep than usual.
- Overeating and weight gain: There is often a marked increase in appetite, particularly for carbohydrates and sugary foods, which can lead to weight gain.
- Fatigue and decreased energy levels: Even when getting more sleep, individuals may feel tired most of the time.
- Social withdrawal: Often referred to as the “winter hibernation,” this symptom involves a desire to avoid social interactions and a tendency to isolate oneself.
- Depressed mood: Persistent feelings of sadness, hopelessness, and irritability are common.
- Difficulty concentrating: Many individuals report a decrease in their cognitive abilities during the winter months, affecting their work and personal lives.
Summer-Onset SAD
Contrary to the winter variant, summer SAD occurs during the late spring and summer months and is less common. Researchers believe that longer days and increased heat and humidity might play a role in disrupting the individual’s circadian rhythm in the opposite way of winter SAD. This form of SAD is thought to be triggered by longer daylight hours and possibly the disruption of schedules during summer.
Symptoms of summer SAD can include:
- Trouble sleeping (insomnia): Opposite to winter SAD, individuals with summer SAD may find it difficult to sleep and may suffer from chronic sleep disturbances.
- Decreased appetite and weight loss: There is often a lack of appetite, which can lead to weight loss, unlike the winter version which leads to weight gain.
- Increased irritability and anxiety: The symptoms tend to be more agitated than those experienced in winter SAD, with an increase in anxiety levels.
- Agitation or restlessness: Along with irritability, individuals may feel more restless and have a tolerance level that is lower than usual.
- Episodes of violent behavior: In extreme cases, irritability and agitation can escalate to violent behavior.
The treatment for SAD may vary slightly between the winter and summer types due to the differences in symptoms. Light therapy is commonly used for winter SAD to compensate for the lack of exposure to sunlight. In contrast, for summer SAD, spending more time in cooler, darker environments may help, and adjusting sleep schedules to align better with natural circadian rhythms can also be beneficial. In both cases, therapy and medication such as antidepressants might be recommended depending on the severity of the symptoms.
The Impact of Seasonal Depression on Men
Seasonal depression, while broadly affecting all demographics, has unique implications for men that are often less discussed. Men may not always recognize their symptoms as depression due to traditional societal views that encourage men to suppress emotions like sadness or hopelessness. Instead, symptoms in men may manifest as irritability, aggression, and a reduced tolerance for stress, which can be easily misattributed to personality traits rather than a treatable mental health condition.
Lifestyle Adjustments to Combat SAD
Professional Treatments Available at Oceanside Mental Health
At Oceanside Mental Health, we recognize that each individual’s experience with Seasonal Affective Disorder (SAD) is unique, and thus, a variety of tailored professional treatments are essential for effective management and recovery.
Take the First Step Toward Better Mental Health
Taking the first step toward managing seasonal depression is crucial. At Oceanside Mental Health, we understand the challenges that come with SAD and are here to provide support and effective treatment options. If you or a loved one is struggling with the symptoms of seasonal depression, get in touch with Oceanside Mental Health. Our team is dedicated to providing individuals with the tools and support they need to overcome the challenges of Seasonal Affective Disorder.

Dr. Anna Pollard (PSY35428) is a licensed clinical psychologist and the Clinical Director at Oceanside Mental Health where she oversees the clinical operations, ensuring the highest standards of care for clients and mentoring a multidisciplinary team of mental health professionals. She earned her PhD in Clinical Psychology with a health emphasis from the California School of Professional Psychology, an APA-accredited program.