The Science Behind Why CPAP Side Effects Happen
CPAP therapy works by delivering a continuous stream of pressurized air to keep the airway open during sleep. It's a remarkably effective treatment for obstructive sleep apnea, but the mechanism itself explains why so many new users experience uncomfortable side effects in the first few weeks. Most side effects trace back to one of three mechanical factors: insufficient humidity, an imperfect mask seal, or pressure that feels stronger than the body is used to. Understanding which of these three is at play makes troubleshooting dramatically more efficient than simply trying random fixes, and many of these factors compound each other rather than existing in isolation. Dry mouth and nasal irritation occur because pressurized air moving continuously through the nose and mouth bypasses the body's natural humidification process. This is compounded for mouth breathers, since air moving directly through the mouth skips nasal humidification almost entirely, making the dryness issue si...