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Subsyndromal Seasonal Affective Disorder (s-SAD or SSAD) is a milder form of SAD experienced by an estimated 14.3% (vs. 6.1% SAD) of the U.S. population. [27] The blue feeling experienced by both those with SAD and with SSAD can usually be dampened or extinguished by exercise and increased outdoor activity, particularly on sunny days, resulting ...
Light therapy has been shown in studies to have mixed results; in some studies, 20% to 50% of those diagnosed with SAD did not gain adequate relief from the use of light therapy. [22] Individuals may also explore alternative treatments if they are unable to commit to the time required and the recurrence of the treatment that is necessary. [ 23 ]
Norman E. Rosenthal is an American author, psychiatrist and scientist who first described seasonal affective disorder (SAD), and developed light therapy as a treatment. Rosenthal was born and educated in South Africa but moved to the United States to complete his medical training.
In fact, a 2022 meta-analysis of 36 studies on blue light exposure and sleep found that people felt less tired after blue light exposure in 50% of the studies, and 33% of the studies found that ...
Parkinson's disease can generate mood swings and mood dysregulation such as depression, low self worth, shame and worry about the future caused by cognitive and physical problems. [129] And in Huntington's disease, common mood swings occur as a result of psychosocial, cognitive deficits, neuropsychiatric and biological factors. [130]
For these reasons, the immobility, monotony, harsh physical environment, sexual deprivation, and the general isolation are believed to contribute to increased anxiety and depression among the residents of Antarctic stations. [1] Several studies have been done over the years to determine the contributing causes, or stresses, of "winter-over ...
Springtime lethargy is the state of fatigue, lowered energy, or depression associated with the onset of spring. Such a state may be caused by a normal reaction to warmer temperatures, or it may have a medical basis, such as allergies or reverse seasonal affective disorder. [1] In many regions, there is a springtime peak in suicide rates.
Causes: Family history, previous diagnosis of a mood disorder, trauma, stress or major life changes in the case of depression, physical illness or use of certain medications. Depression has been linked to major diseases such as cancer, diabetes, Parkinson's disease and heart disease, Brain structure and function in the case of bipolar disorder. [1]