Seasonal affective disorder, or SAD, is a type of depression related to changes in the seasons and a general lack of sunlight, which can disrupt our biological clocks and alter brain chemistry. Let us know how you cope.

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It’s that time of the year again. Ready to get SAD?

Seasonal affective disorder, that is, a type of depression related to changes in the seasons and a lack of sunlight.

If you’ve lived through a couple of years, or maybe this is your first year facing the calamity, in the Pacific Northwest, we want to hear from you. How have you learned to manage the lack of daylight?

Please contact cclarridge@seattletimes.com or 206-464-8983.

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SAD usually begins for most people in October or November and is thought to be connected to the way decreased sunlight disrupts circadian rhythms or biological clocks; decreases levels of the mood-altering brain chemical, serotonin; and alters the body’s balance of sleep-inducing melatonin.

It affects more women than men, more younger people than old and is more common in people who live far away from the equator, medical professionals say.

If you’re using some form of light therapy — the most common treatment for SAD — or another successful method of dealing with it, we’d love to hear from you.

Tell us what works for you.