
and to eliminate any chance that I'm mouth breathing, it's tight enough to leave a red mark under my chin. That I can deal with; it fades over the course of the morning. When I wasn't wearing it tight, I found it would slip back off my head or flop forward during the night. I wear it over my mask headgear, not under it.
What's disturbing me is discovering that at the top of my head, there's swelling on my scalp in front and behind of where the strap lies. That also goes away over the morning, but I'm concerned I'm doing something damaging here. Between the 'dent' where the strap lies and the bumps around it, my head feels like a motocross track when I get out of bed.
Anyone else experience this? Am I doing something wrong? Is there a circulation issue I should be concerned about? Should I change to a different chinstrap? All advice/suggestions appreciated by this CPAP newbie.