Sleep Disorders # 17: Shift work sleep disorder
It is a circadian rhythm sleep disorder that occurs when your work schedule and your biological clock are out of sync. 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 manifestations of SWSD are quite variable. Simple ways to treat this sleep disorder is by taking regular breaks and regulating your sleep-wake cycle by increasing light exposure at work.