How to Stop CPAP Red Marks and Pressure Sores
By Treatments for Sleep Apnea · Published June 8, 2026
Waking up with mask lines pressed into your face is common enough that people assume it is just the price of CPAP. It is not. Deep red marks and sore spots are a fit problem, and a fit problem has fixes. Left alone, the worst cases turn into actual skin breakdown, so this is worth solving rather than tolerating.
What causes them
Red marks and pressure sores come from too much pressure concentrated on the skin. The usual culprits are straps tightened too hard, a mask that is the wrong size, and a cushion that has hardened with age so it presses rather than seals. Often it is a feedback loop: a leaking mask gets tightened, the tightening causes marks, and the marks never get a chance to heal.
Who gets them most
People with sensitive skin, prominent cheekbones or a narrow nose bridge, and anyone fighting leaks by over-tightening are the most affected. Full face masks have more contact area, so fit matters even more with them.
The fixes that work
Loosen first. Set the straps to the lightest tension that still seals, fitting while lying down. Replace a hardened cushion, since a fresh one sits more gently. Add fabric liners between the cushion and your skin to spread the contact and reduce both marks and small leaks. Strap pads help where headgear digs in. If marks persist, the mask style may not suit your face, which leads back to choosing the right mask.
How it relates to leaks
Red marks and mask leaks are two sides of the same fit problem, which is why over-tightening to stop a leak so often causes marks. Fixing the seal properly, with the right cushion and lying-down fitting, usually addresses both at once.
What to check or replace
Replace cushions on schedule, confirm your size, and rotate in liners. Let existing sores heal, keep the area clean, and avoid reusing a mask that has caused skin breakdown until the fit is corrected.
When to talk to a clinician
See someone if a sore breaks the skin, gets infected, or will not heal, or if you cannot find a comfortable fit. A supplier can refit you, and a clinician should look at any persistent skin breakdown.
This is general information, not medical advice. See the equipment hub for the full setup.
Disclosure: This article contains affiliate links. If you buy through them we may earn a small commission at no extra cost to you. We only recommend accessories we would use ourselves. This is not medical advice.
| Accessory | Why it helps | |
|---|---|---|
| CPAP mask liners | Soft fabric barrier between cushion and skin; reduces marks and small leaks. | Check price |
| Strap pads / cushion covers | Pad the headgear straps where they dig into the cheeks or forehead. | Check price |
| Replacement cushion (correct size) | A hardened cushion presses harder; a fresh, well-sized one sits gentler. | Check price |
Frequently asked questions
Why does my CPAP mask leave red marks?
Red marks come from pressure on the skin, usually because the straps are too tight, the mask is the wrong size, or the cushion has hardened. Deep marks that linger or break the skin mean the fit needs fixing, not that you should accept them as normal.
How do I prevent CPAP pressure sores?
Loosen the straps to the lightest setting that seals, replace a hardened cushion, add fabric mask liners to cushion the contact, and consider a different mask style that distributes pressure differently. Give existing sores time to heal and keep the contact area clean.
Are CPAP marks on my face permanent?
Temporary red lines that fade within an hour or two of waking are common and harmless. Marks that stay for hours, deepen, or break the skin signal too much pressure and should be addressed, since persistent sores can become a real skin problem.