Information about seasonal affective disorder (sad), a type of depression, including signs and symptoms, how sad is diagnosed, causes, and treatment options. Major depressive disorder with a seasonal pattern (formerly known as seasonal affective disorder, or sad) is characterized by recurrent episodes of depression in late fall and winter, alternating with รขโ‚ฌยฆ What is seasonal affective disorder?

It happens during certain seasons of the year, most often fall or winter. It is thought that shorter days รขโ‚ฌยฆ The meaning of sad is affected with or expressive of grief or unhappiness : How to use sad in a sentence.