Normally, a record of your sleep patterns and your work schedule is enough information for the doctor.
He or she may want to use additional tests if other sleep disorders are suspected to be causing your problems.
One or both of the following sleep studies might be considered:
Overnight Sleep Study
Also called a polysomnogram, this study charts your brain waves, heart beat, and breathing as you sleep. It also records how your arms and legs move.
Multiple Sleep Latency Test (MSLT)
This is a daytime nap study that records brain waves during at least four naps. The MSLT measures how fast you fall asleep during the day. It also shows what kind of sleep you have when you take a nap.
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