A person can spend a full night in bed and still doze off in a meeting the next morning. Sleep apnea is one reason. During sleep the airway narrows or collapses, breathing slows or stops, and loud snoring breaks off. Then comes a gasp or a choke, and breathing resumes. The Sleep Foundation's page on apnea and insomnia, updated July 10, 2025, makes a point that surprises many readers. The interruptions usually do not wake a person fully, so the sleeper keeps no memory of them. A bed partner hears the silence and the choke. The sleeper just wakes up tired.

Besides the interrupted snoring, the page lists restless nights, a dry mouth or a headache in the morning, trouble concentrating, and daytime sleepiness that can include dozing off without meaning to. A rarer form, central sleep apnea, happens when the brain and the breathing muscles fail to keep breathing steady. The signs described here belong to the obstructive kind.

Trouble falling asleep is a different complaint

Insomnia is difficulty falling asleep or staying asleep, and it carries a daytime cost. The page lists irritability, fatigue, forgetfulness, and worry about sleep. A short bout, under three months, often follows a stretch of stress. When it lasts more than three months, it counts as chronic. A person with insomnia usually knows they slept badly.

That self-awareness is where the two problems part ways. Choking sounds between snores are a common apnea sign, and the page does not list them among insomnia symptoms. Apnea tends to show up as involuntary dozing during the day. Insomnia tends to show up as tiredness without that dozing.

The two can sit in the same person

The page states plainly that apnea and insomnia can occur together, and each makes the other worse. Discovering one does not rule out the other.

They are also checked in different ways. Insomnia is usually assessed from the symptoms. Apnea needs a test that counts breathing disruptions, such as an overnight study or a home sleep apnea test. This piece does not recommend a device or a medicine.

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