If you continue to feel fatigued, or your fatigue lasts more than a few days, consult a doctor. Certain medical conditions and diseases may cause fatigue. Left untreated, these problems may worsen.

Drivers who work night schedules need to be especially careful of developing fatigue. It is important they remain alert while on the road. In some cases, a supervisor may be able to make minor schedule changes that can help, or direct employees to programs to teach people to develop proper sleep patterns for this type of work.