1. The wrong size or style CPAP mask

The wrong size or style of CPAP mask may feel uncomfortable. Air leaks happen when the masks don't fit correctly. Air leaks can cause dry eyes, dry or stuffy nose, dry mouth, skin irritation, and pressure sores. Some CPAP machines let your care team see how the machine works even while you're at home. This technology is called remote monitoring. Remote monitoring will notify your care team of an air leak without you even having to call. If you think your mask is a bad fit, contact your care team or CPAP supplier within the first few days.

• Try a different mask. There are many types of CPAP masks available. For example, a full-face mask covers the mouth and nose, with straps that stretch across the forehead and cheeks.

  Full-face masks may make some people feel claustrophobic. These masks can work better for people who breathe through their mouths while sleeping. They also provide a stable fit for people who move around a lot during sleep.

  Nasal pillow masks have pillows or cushions that fit under your nose. They deliver air directly through the openings to the nose, called the nostrils. Nasal cradle masks also deliver air directly to the nostrils. These mask types can be comfortable and improve fit.

  Nasal pillow masks and nasal cradle masks are good for people who wear glasses or read with the mask on. These masks don't block the eyes as much as full-face masks do. They also work for people with mustaches or beards and people who feel claustrophobic.

  Nasal pillow and nasal cradle masks may not work as well if you move around a lot during sleep or have difficulty breathing through your nose, as can happen if you have a cold or allergies that cause a stuffy nose.

• Pay attention to size. Most masks come in different sizes. Just because you're a certain size in one type or brand of mask doesn't mean you'll be the same size in another. Most CPAP masks and their straps can be adjusted.

  Ask your healthcare professional or CPAP supplier to show you how to adjust your mask to get the best fit. Manufacturer product instructions also can show you how to do this. A properly fitting mask shouldn't be uncomfortable, cause pain or have any sounds of leaking air.