Seasonal Affective Disorder - Seasonal affective disorder (SAD) is a type of depression that's related to changes in seasons — SAD begins and ends at about the same times every year. 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 during the spring and summer months. Less often, SAD causes depression in the spring or early summer and resolves during the fall or winter months.
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Symptoms:
- Feeling listless, sad or down most of the day, nearly every day
- Losing interest in activities you once enjoyed
- Having low energy and feeling sluggish
- Having problems with sleeping too much
- Experiencing carbohydrate cravings, overeating and weight gain
- Having difficulty concentrating
- Feeling hopeless, worthless or guilty
- Having thoughts of not wanting to live
Fall and winter SAD
Symptoms specific to winter-onset SAD, sometimes called winter depression, may include:
- Oversleeping
- Appetite changes, especially a craving for foods high in carbohydrates
- Weight gain
- Tiredness or low energy
Spring and summer SAD
Symptoms specific to summer-onset seasonal affective disorder, sometimes called summer depression, may include:
- Trouble sleeping (insomnia)
- Poor appetite
- Weight loss
- Agitation or anxiety
- Increased irritability
Seasonal changes and bipolar disorder
People who have bipolar disorder are at increased risk of seasonal affective disorder. Some people with bipolar disorder, episodes of mania may be linked to a specific season. For example, spring and summer can bring on symptoms of mania or a less intense form of mania (hypomania), anxiety, agitation and irritability. They may also experience depression during the fall and winter months.
