Medically reviewed by Sanja Jelic, MD Key Takeaways Cold air from the CPAP machine can mean the humidifier isn't working ...

Fact checked by Lisa Sullivan, MSMedically reviewed by Daniel Combs, MDKey TakeawaysCPAP machines can cost between $300 and ...

Research suggests that CPAP may improve headaches in some people with sleep apnea. But some people may develop headaches if their CPAP mask is too tight, if they develop nasal congestion, or if CPAP ...