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  1. Seasonal affective disorder (SAD) - Symptoms & causes - Mayo Clinic

    Dec 14, 2021 · If you're like most people with SAD, your symptoms start in the fall and continue into the winter months, sapping your energy and making you feel moody. These symptoms often resolve …

  2. Seasonal Affective Disorder - National Institute of Mental Health …

    Information about seasonal affective disorder (SAD), a type of depression, including signs and symptoms, how SAD is diagnosed, causes, and treatment options.

  3. SAD Definition & Meaning - Merriam-Webster

    The meaning of SAD is affected with or expressive of grief or unhappiness : downcast. How to use sad in a sentence.

  4. Seasonal Depression - Symptoms, Causes, Treatments

    Apr 30, 2024 · Seasonal depression, also known as seasonal affective disorder (SAD), is a mood disorder that happens every year at about the same time. It usually starts in fall or winter and ends in …

  5. SAD | English meaning - Cambridge Dictionary

    SAD definition: 1. unhappy or sorry: 2. If something looks sad, it looks worse than it should because it is not…. Learn more.

  6. SAD definition and meaning | Collins English Dictionary

    If you are sad, you feel unhappy, usually because something has happened that you do not like. The relationship had been important to me and its loss left me feeling sad and empty. I'm sad that Julie's …

  7. Seasonal Affective Disorder - Psychology Today

    Feb 28, 2022 · To be diagnosed with SAD, an individual must meet the criteria for major depression coinciding with specific seasons for at least two years. The individual must experience seasonal …

  8. Easing Seasonal Depression: 14 Tips - Everyday Health

    Sep 22, 2022 · SAD is a form of depression triggered by changes in daylight and weather that occur primarily in the fall and winter. Experts aren’t certain why some people experience SAD, but some …

  9. Sad: Definition, Meaning, and Examples sad - usdictionary.com

    May 13, 2025 · As an adjective, "sad" primarily refers to feeling or showing unhappiness or sorrow. This is its most common usage, applied to both people and situations. It also describes something that …

  10. sad Definition & Meaning | Britannica Dictionary

    He's feeling sad because his pet died. People were sad that he was leaving. The experience left her sadder but wiser. Have you heard the sad news about his wife's illness? It'll be a sad day when you …