PSG Test: What It Is, Why It’s Done, and What You’ll Learn

When you’re tired all day but can’t sleep well at night, a PSG test, a comprehensive sleep study that records brain waves, oxygen levels, heart rate, and breathing patterns during sleep. Also known as polysomnography, it’s the most accurate way to find out what’s really going on while you’re asleep. This isn’t just about snoring—it’s about catching serious conditions like sleep apnea, narcolepsy, or abnormal movements that your brain and body can’t control on their own.

Doctors rely on the PSG test because it doesn’t guess—it measures. Sensors track everything: how often your breathing stops (sleep apnea), if your legs jerk uncontrollably (periodic limb movement disorder), or if you suddenly fall into deep sleep during the day (narcolepsy). These aren’t rare quirks. One in five adults has undiagnosed sleep apnea, and many don’t even know they’re waking up dozens of times a night. The PSG test gives you proof—not assumptions—so treatment can actually work.

What you’ll find in the posts below isn’t just theory. It’s real cases: kids with enlarged tonsils blocking their airway, seniors confused by meds that trigger delirium at night, people on HIV drugs whose sleep patterns changed without warning. You’ll see how PSG test results connect to CPAP use, medication side effects, and even why some generics cause unexpected reactions during sleep. These aren’t isolated stories—they’re pieces of the same puzzle. Whether you’re a patient, a caregiver, or just someone who’s tired of waking up exhausted, this collection gives you the facts you need to ask the right questions—and get the right help.