@dshep2001 I didn't have any allergies but did have the redness around where the mask was on the skin. I think it was due to the pressure and flapping against the skin for me. Don't give up on the CPAP if you have obstructive sleep apnea. The hardest thing for most people, myself included, is finding a mask that works best for you and it can be a challenge as others have mentioned. I tried 6 different masks before settling on the AirFit F20 but I'm still looking for one that might work better.

Here's some information that describes the symptoms you are having - "Unfortunately, this may cause nasal congestion and a runny nose. In some cases the dryness will cause irritation, burning and sneezing. These symptoms can ..."

- Here is a list of common complaints from CPAP users, do any of these sound familiar?: https://www.sleepapnea.org/treat/cpap-therapy/what-you-should-know-about-cpap-humidification/the-importance-of-cpap-humidification/
- When things go wrong with PAP: https://www.sleepapnea.org/treat/cpap-therapy/troubleshooting-guide-for-cpap-problems/when-things-go-wrong-with-pap/

Do you use a humidifier with your CPAP?