I'm Having Headaches From My CPAP Machine
Sometimes issues with headaches and earaches can be caused by the pressure being too high or too low. Check this with your doctor or sleep technician to see if an adjustment needs to be made.
An APAP machine should adjust automatically to the correct pressure. If it doesn’t, check with your doctor to find out why.
Inadequate ventilation (breathing) also could build up carbon dioxide levels, which can cause headaches. Check with your doctor to make sure you are getting the right pressure to best support your breathing.
Sinuses can sometimes become blocked from nasal congestion. Treatment of nasal stuffiness as described above and checking with your doctor to make sure you do not have a nasal infection may be helpful.
Check the humidifier settings to see if the heated water is warm enough to help open sinuses.
Headaches can be caused if your headgear straps are too tight. Try loosening the straps to see if that helps.