Shift work sleep disorder
Shift work sleep disorder
Shift work sleep disorder (SWSD) is a circadian rhythm sleep disorder characterized by insomnia and excessive sleepiness affecting people whose work hours overlap with the typical sleep period. There are numerous shift work schedules, and they may be permanent, intermittent, or rotating; consequently, the manifestation of SWSD may vary.
Pronunciation
Shift work sleep disorder: /ʃɪft wɜːrk sliːp dɪsˈɔːrdər/
Etymology
The term "shift work sleep disorder" is derived from the English words "shift" (meaning a change in position or direction), "work" (meaning exertion or effort directed to produce or accomplish something), "sleep" (a condition of body and mind which typically recurs for several hours every night, in which the nervous system is inactive, the eyes closed, the postural muscles relaxed, and consciousness practically suspended), and "disorder" (an irregularity, disturbance, or interruption of normal functions).
Symptoms
The primary symptoms of SWSD are insomnia and excessive sleepiness. Other symptoms may include a reduced level of concentration, constant tiredness, and lack of energy. These symptoms are a direct result of the body's natural circadian rhythm being disrupted.
Causes
The main cause of SWSD is working during the night or early morning hours when the body expects to be asleep. People who work rotating or irregular shifts are also at risk. Other factors that may contribute to SWSD include long working hours, a lack of sleep, and frequent changes in sleep schedule.
Treatment
Treatment for SWSD typically involves a combination of sleep hygiene practices, light therapy, and medication. In some cases, a change in work schedule may be necessary.
Related Terms
External links
- Medical encyclopedia article on Shift work sleep disorder
- Wikipedia's article - Shift work sleep disorder
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