Depressive symptoms can be a sign of a psychological disorder (such as a mood disorder), or can occur in some cases due to medical problems or medications. Sleep is highly associated with symptoms of depression. Any disruption in the sleep pattern negatively impacts the brain’s ability to replenish certain types of neurochemicals (such as serotonin) during deep sleep. These neurochemicals are largely responsible for regulating mood/anxiety symptoms and cognitive function (related to such things as memory, focus, concentration). As such, the neurochemical deficiency that results from sleep disruption often results in depressive symptoms. Ironically, depression often involves sleep disruption and patients find themselves caught in an endless cycle of sleep problems and depression.
This symptom is associated with: