Winter Blues

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 Winter Blues.

P.K.Ghatak, MD

No. 52.


Winter blue is one of these shades of blue colors.

Winter blues is a temporary phase of depressive mood in the winter months. It is not a disease. It is a fairly common feeling in the winter, lasting only a short period of time and clearing spontaneously. Winter blues is more common in women and generally follows a specific event, stress of holidays or missing a loved one. This sad mood does not interfere with normal functioning of daily activities of the individual. Some experts think winter blues is an early phase of an illness known as Seasonal Affective Disorder (SAD). Unlike winter SAD, some may feel SAD in summer months. The real cause of SAD is not known. It is linked with increased production of melatonin from the pineal gland in the brain, producing prolonged periods of sleep and an additional reason for decreased concentration of serotonin in the brain. Reduced serotonin produces decreased concentration ability and alertness.

Winter blues are common in colder months when the sun shines a shorter period of the day, and the triggering is related to some sort of external stress. Symptoms of winter blues overlap some of the SAD disorder, but the conditions are distinct.

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Footnote:

Serotonin in a large quantity is produced in the G-I tract. Serotonin regulates the intestinal muscle contraction and peristalsis. Gut generated serotonin cannot cross the blood-brain barrier.

Inside the brain serotonin is produced in Raphe nuclei, it enhances the mood, appetite, memory and learning.


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