Nasal or Full-Face CPAP Mask: What Changes?
Sleep & NighttimeArticleCompare coverage, mouth leaks and the fit questions to bring to your sleep team.

In this article
You may like the idea of a smaller mask, then worry about waking with your mouth open. Or you may already use a larger one and spend bedtime pulling at the straps. Bring that specific frustration to the fitting appointment.
What a larger mask can change
Ask whether the air is escaping through your mouth or around the cushion. These are different fitting questions. A full-face mask can address mouth leakage, but its own seal still needs checking. Oxford’s guidance recommends reviewing adjustment, size and worn components when a mask leaks.1
For a fitting review, explain where you feel air and whether the problem appears after turning onto your side. Oxford advises checking fit in your usual sleeping position. Tightening until the mask hurts can mean the size is wrong, and excessive tightening can itself cause leaks.1
When comfort needs another conversation
The American Thoracic Society2 describes several options for people struggling with PAP: different mask types or sizes, humidification for dryness, and support from the treatment team. Machine data can help the provider investigate air leaks and other difficulties.2
Ask: “Can we review the leak information and try a fitting before deciding which mask I need?” Then ask who to contact if the next trial still interrupts your nights.
Bring the problem, even if you feel embarrassed
You do not need to make the story sound tidy. “I keep taking it off” or “I’m worried about wearing it beside my partner” gives the appointment a clear starting point. The Society recommends contacting your provider or sleep specialist when PAP is difficult to use, and using prescribed PAP whenever you sleep.2
The 14-Night Lights-Out Record and Visit Brief in Did I Do That in My Sleep? can help organize your nighttime observations and appointment questions. Explore the sleep playbook.
This article is for general educational purposes only and is not medical advice. It isn't a substitute for diagnosis or treatment from a qualified healthcare professional who knows your health history. Please don't ignore professional advice or delay getting care because of something you read here. If you think you may be having a medical emergency, call 911 or your local emergency number right away. Girl Playbook does not endorse any specific product, test, or provider.
Girl Playbook sells this book. It provides education and worksheets, not individualized medical care.
Sources
The research behind this article, in the order it’s cited. How we source our articles.
- Oxford University Hospitals NHS Foundation Trust, 2026Information and guidance (opens in a new tab)abc
- American Thoracic SocietyPositive Airway Pressure (CPAP and BPAP) for Adults with Obstructive Sleep Apnea (opens in a new tab)abc
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