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  Oct 13, 2018

Shift Work Sleep Disorder

Shift work sleep disorder (SWSD) is a sleep disorder that affects people what work irregular hours or in shift rotations. Their sleep schedules are required to deviate from the natural circadian rhythm of the body, which usually regulates the sleep-wake cycle.

As a result, their sleeping pattern is disrupted and they can have difficulty sleeping when they have time to sleep and may become sleep deprived and underperform at work due to excessive sleepiness.

It is most common in individuals that work unusual hours, usually between 10 p.m. and 6 a.m.

Circadian Rhythm

Shift work sleep disorder occurs due to a misalignment between the actual and desired sleeping pattern of the individual, usually as it differs from what is considered as normal by society.

It is classed as a circadian rhythm sleeping disorder, as it involves changes in sleep habits that differ from the normal sleep-wake cycle of the body. The circadian rhythm is the internal body clock that responds to light cues in the surrounding environment to regulate the production and release of hormones, causing an individual to feel tired and alert at specific periods during the day.

Shift Workers

Between 15-26% of the labor