To many insomnia sufferers, the prospect of sleeping 7 hours a night sounds great. Insomniacs who write to me with news that they’ve achieved this feat after undergoing some type of insomnia treatment are thrilled.
Other people are not so thrilled about 7-hour nights. No matter how long they sleep, they wake up feeling unrested. Insufficiently refreshing sleep is the main symptom of people diagnosed with nonrestorative sleep.
If you haven’t had a sleep study, you may wonder if spending the night at a sleep clinic might help the doctor understand your problem and how to fix it. Polysomnography, or PSG, is the test conducted at the clinic. New guidelines from the American Board of Internal Medicine (ABIM) clarify when PSG is useful in cases of chronic insomnia and when it isn’t. Here’s a summary and explanation of the guidelines.