You do not need a specific type of mask to use your APAP machine. While you can wear a CPAP mask during APAP therapy, keep in mind that not all CPAP masks are designed to meet your needs. For example, if you are someone who requires highly pressurized airflow, you may want to avoid a nasal pillow mask. And if you tend to feel claustrophobic, a full face mask may be very uncomfortable for you.