I recently remarried. My husband is 27, normally fit and well, but has always slept for long periods and on waking takes at least 30 minutes to feel 'normal'. Some mornings the covers are drenched in sweat from him just as they used to be with me.
Today I could hardly wake him up. He's a mouth breather. I changed my nasal pillows for one of my old full face mask and asked him to try sleeping with it.
The machine settles at 4.0, and I've just been up to check on him (after sleeping for about an hour) and he's sleeping peacefully with the machine running at 8.7.
If he didn't have apnea would the increase in pressure happen? I'm considering asking for him to go for sleep study.