How common is daytime sleepiness in obstructive sleep apnoea?

In obstructive sleep apnoea, the upper airway can narrow or close during sleep. The brain briefly rouses the body to reopen the airway, often without a clear memory of waking. These interruptions can make sleep less refreshing. Loud snoring, witnessed pauses in breathing, waking gasping, morning headaches, dry mouth, and difficulty concentrating are details worth mentioning, but not everyone notices the same pattern.

Book a clinical assessment if sleepiness is ongoing, especially when there is snoring or someone has noticed breathing pauses. A clinician may review your sleep history, physical health, and medicines, and may arrange sleep testing when appropriate. Until assessed, protect safety by avoiding driving or hazardous work when alertness is reduced. Keep a brief account of sleep, naps, snoring reports, and situations where you nearly fall asleep.

Seek prompt medical advice if you are repeatedly dozing in situations that require concentration, such as at the wheel or during work. Emergency help is needed for severe breathing difficulty, blue or grey lips, chest pain, fainting, or sudden neurological symptoms. These signs need assessment even if you also suspect a sleep problem.

Ask whether a sleep study is suitable, what your snoring or breathing history suggests, and how to reduce risk while waiting for assessment. If you share a bedroom, observations from a partner can be useful.