“Sorry if I missed it but can someone tell me what health condition causes difficulty breathing at night and the need for a C-pap machine”
Simple explanation: during sleep your muscles relax and soft tissues in back of throat “collapse”, thus blocking your airway. The CPAP creates a pneumatic splint holding your airway open. Prior to PAP most common solution was a surgery (maybe 50% effective) where they cut out some of the soft tissue. Dental appliances can adjust your jaw position, again the goal is keeping your airway open. Sleeping position, often sleeping on side, may help as soft tissues doesn’t “fall” into airway.
Most common is “obstructive sleep apnea” (OSA), obstruct - the soft tissues blocking airway. Apnea: to stop breathing. There are other causes of apnea, however much less common. Simple PAP generally not effective solution when cause is other.
Weight loss can help. Alcohol does play a factor (even using PAP, your prescription may be fine most of the time, but not enough pressure at times you over indulge).
Snoring is an indication, but does not mean OSA. However, if while snoring your bed partner gasps for air, startles awake to breathe, that should be tested.
In addition to disrupting your sleep (patients report always feeling tired), lack of breathing (getting rid of CO2) puts excessive strain on your heart. PAP is simple, generally effective, one of those few treatments that can change your life for the better “overnight”. The masks / interfaces can be a PIA, so try different types till you find one that works.
Someone asked about using O2, you can bleed it into your pap mask with a simple valve. Ask your provider.
Adding humidification can reduce dry mouth. Keep your mask/tube clean!
I am not a Dr, spent 20 plus years involved in the HME industry with a lot of time around PAP ..so this is layman’s view.