Jenny Shields was terrified when she would awaken coughing and spitting up phlegm seeded with black specks. “I couldn’t figure out what it was,” she said. Shields had her house checked for mold.

A CPAP machine provides continuous air pressure to keep the airways open during sleep. Doctors may prescribe CPAP therapy to people who experience symptoms of sleep apnea. A continuous positive airway ...

Loud snoring at night. Pauses in breathing followed by gasps for air while you’re asleep. Excessive daytime fatigue. Frequent nodding off in front of the TV or even when behind the wheel of a car.