Effects are generally small. The requirement of alertness and optimal performance by night and sleep during the day is at odds with natural tendency. Even with a limited exposure to daylight, the circadian clocks of shift workers remain fixed in a normal diurnal variation with the peak of alertness in the early evening and the trough in the early morning. The cumulative effects of repeated night shift exposure result in chronic sleep restriction and partial sleep deprivation. Treatment Shift work schedules should be individualized for each workplace.
Empiric data suggest that forward rotating shifts are generally better tolerated.
Bright light therapy. Short acting benzodiazepine can be used to improve sleep during daytime. Disorder of sleep hygiene . Rarely it may occur in patients with functional lesions the circadian clock, including those with neurologic ablation due to tumor or other pathological process. Limiting daytime napping, increased outdoor activity, etc.