The department of
Diagnosis
Sleep disorder diagnosis covers sleep studies, polysomnography, and at-home tests — field notes, expert interviews, and reader accounts of the process here.
Pieces
6
Sleep
May 2026 · 5 min
The Apnea-Hypopnea Index Is a Number, Not a Verdict: How One Threshold Came to Define Sleep Apnea
If you ever get tested for sleep apnea, your night will be reduced to a single number. It is called the apnea-hypopnea index, the AHI, and it counts how many times an hour your breathing stops or…
By Judith Hawthorn · Read →
Sleep Apnea
May 2026 · 4 min
Your Sleep Quality Assessment Is Already Happening — You Just Aren't Reading the Results
Most people get a sleep quality assessment every single morning and throw it away before breakfast. It arrives as a feeling — the gray, underwater sensation of waking unrefreshed, the third snooze…
By Owen Blackwell · Read →
Diagnosis
May 2026 · 5 min
The Eleven Minutes Before Sleep: What a Sleep Quality Assessment Actually Looks For
Falling asleep instantly is not a sign that you sleep well. It is often a sign that you don't. This runs against everything we tell each other.
By Daniel Whitfield · Read →
Sleep Apnea
May 2026 · 9 min
I Did Both: A Home Test and a Sleep Lab for the Same Sleep Apnea Diagnosis
The advice you'll hear, from forums and increasingly from physicians themselves, is sensible: start with a home test.
By Rachel Stanton · Read →
Sleep Apnea
May 2026 · 10 min
Morning Headaches and Sleep Apnea: When the Pain in Your Skull Is a Signal from Your Airway
There is a specific kind of headache that arrives with consciousness. You open your eyes, and before your feet hit the floor, you can already feel it: a dull, bilateral pressure across the forehead or…
By Owen Blackwell · Read →
Sleep Apnea
May 2026 · 6 min
The AHI of 5: What Your Central Sleep Apnea Diagnosis Actually Measures
An AHI of 5. That is the number that, in most American sleep labs, moves a person from "snorer" to "patient." The Apnea-Hypopnea Index — events per hour of sleep — is the single figure that decides…
By Diane Norwood · Read →
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