My doctor always assumes it is related to allergies and has prescribed one or another nasal sprays that do not seem to make a difference.
I was watching a show about health issues related to room humidifiers and not cleaning them correctly. It made me start to wonder if my cough could be caused by using the cpap. My cleaning habits with the cpap are not consistent. Most days I will remove the water chamber and open it to air but I do not remove the water. I use it up until I need to refill the chamber. I hang the hose and nasal pillow near a heater vent to dry. But there are days that I leave everything intact and then use it again the next night. I rarely clean the chamber with a mild bleach solution as suggested.
Has anyone else out there developed a nasty cough upon using a cpap?