I've had very little trouble adjusting to the mask or the pressure (0.08 I think). My AHI is 1.4 with the machine. I started wearing a chin strap a few nights ago because I was mouth breathing and losing the effects of the CPAP. When I was mouth breathing I wasn't getting the nightmares, or at least...

I have mild OSA. Since starting on the CPAP (about two weeks ago) every single night that I have used my CPAP machine (and I admit to skipping a night or two) I have had, with out fail, a nightmare or woken up in utter terror. It only happens when I use my CPAP and started the first night I used the...