When I ask people with persistent insomnia if they’ve had a sleep study, the common responses I get are these:
“I had one and all I learned from it was that I don’t have sleep apnea.”
“I want one, but my doctor won’t write the prescription.”
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.