You can get full face, nasal mask (2 versions), or nasal "pillows".
How does one choose? I guess your doctor knows.
Looks challenging to try and sleep with these, but I guess you may have to do what you have to do.
At least, there are therapeutic options these days, and hopefully many more in the future for all the illnesses out there! ;-)
(Credit Photo: Andy Blumenthal)
(Note: Not intended as medical advice in any way!)