Hi
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This machine dries up the eyes and nasal and lung passages which causes irritation, burning and sneezing. You can try a cold water humidifier to start with. If you already have a humidifier and still experience these symptoms you may need a heated humidifier. In most cases this resolves nasal congestion and irritation if it is caused by CPAP. CPAP machines can cause air in the stomach-gas and bloating. Sleeping with head aligned with the body helps. If you want a raised head then the head end of the bed should be raised. Pillows should be kept to the minimum. Lowering the CPAP pressure can help but do not do this without consulting your sleep specialist. Switching over to bilevel pressure or C-Flex may help you too. So ask your specialist about it. Take care!
Do you have a humidifier on your CPAP? Dry air can cause these kind of complaints.