Often waking during the night with a feeling of panic or not being able to catch your breathe is a sign that your pressure is too low. It may also be that your pressure is too high making you feel as if you cannot breathe (Ex Like walking into the wind). This could also happen if you are wearing a nasal mask and mouth breathing. In this case increasing the humidity, trying a chinstrap or switching to a full face mask may help. Please contact our office to discuss potential adjustments to correct this, we may be able to adjust your/pressure relief setting to help.