I also have sleep apnea, my neurologist said it is common among cluster heads. I decided to talk to my Doc after realizing there are others with apnea on these boards. Fungus and my CPAP have changed my life. I have also heard and read that the CPAP does not help the headaches, but as stated you are much more rested to fight the battle/dance.
The sleep studies are very simple now. you pick up a unit that straps to your arm, two sensors are attached to your fingers and your sleep data is recorded. you return the unit to the respiratory therapist for diagnostics analysis. Sleep apnea is rated by how many events you have in an hour, for example:
If you stop breathing for more than 10 seconds and have a significant drop in your 02saturation, this is classified as an event. if you have greater than 15 events in an hour, you are classified as having sever sleep apnea and a CPAP is appropriate. I have a score of 40 events per hour with an 02 saturation decrease to 80%. the normal 02 saturation is greater than 94%.
I now sleep all night long........... My wife had a hard time sleeping because she was used to my snoring!! She is so funny. "Ive been on this snoring amusement park ride for 25 years and now the silence is creepy... keep snoring or I want a divorce" She was just kidding.
the new CPAP units are ultra quite. between the fungus and the CPAP if feel better than ever!!
there is a study on CH and apnea I found by googling it. That basically stated that 40% of Cluster heads have some form of apnea and that the CPAP does not decrease the intensity or the frequency of CHs.
The first night I used the CPAP, I sleep all night long. I had never slept all night long, EVER! I felt soooo great, and this was right after I busted for the first time, headaches gone and sleeping all night. not waking one time was euphoric. If I could do a cart-wheel or a back-flip I would! Boy I sound excited. Good topic, thanks