Seasonal Affective Disorder (SAD): Symptoms and Treatment

Medically Reviewed by Madeline Hubbard, RN, BSN

Photo Courtesy: martin-dm/iStock by Getty Images

Do you ever feel down when the weather gets colder and the days get shorter? It’s normal for our moods to change slightly with the seasons. But if your mood changes are so severe that they interfere with your daily life, you may have a health condition called seasonal affective disorder (SAD).

SAD is a type of depression that’s tied to a certain time of year. Symptoms usually start in the late fall and last through the winter. There’s also a less common form that happens in late spring and summer, sometimes called “summer SAD.”

If you experience seasonal affective disorder, you’re not alone — it affects around 1 in 20 adults in the United States. Learn about the symptoms, causes and treatment options for SAD.