Although it is spring and the days are getting longer in the northern hemisphere, the lingering cold and harsh weather can limit your exposure to sunshine. People in areas with less sunshine may experience feelings of sadness, fatigue or hopelessness. A form of depression, called seasonal affective disorder (SAD), can affect people in low-light conditions.
Seasonal affective disorder occurs when fluctuating and decreasing levels of sunlight cause imbalances in your serotonin levels. The resulting depression can lead to difficulty getting out of bed in the morning or reduced interest in activities.