Common nighttime signs include loud snoring, gasping or choking during sleep, restless sleep, and waking with a dry mouth. Daytime signs include morning headaches, fatigue after a full night's sleep, trouble concentrating, and irritability. Not everyone who snores has sleep apnea. Left untreated, it's linked to high blood pressure, heart disease, stroke, and type 2 diabetes. If these sound familiar, schedule a consultation.