Dry mouth and snoring: what should you know?

When the nose is blocked, a person may breathe through the mouth at night. Air moving over the mouth dries saliva, and relaxed throat tissues can vibrate to produce snoring. Allergic rhinitis and chronic sinusitis can narrow or obstruct the nasal passages. Obesity can increase the likelihood of airway narrowing, and obstructive sleep apnoea presents with repeated pauses or reductions in breathing during sleep. Snoring alone does not establish sleep apnoea, but loud or changing snoring deserves attention when sleep is unrefreshing.

Keep the bedroom comfortably humidified, drink enough during the day, and avoid alcohol close to bedtime. Treat known nasal allergies as advised and keep a note of congestion, sleeping position, and morning headaches. Side sleeping may reduce airway vibration for some people. If weight is affecting breathing, discuss a weight management programme that fits your health and circumstances. Do not rely on mouth taping, especially if your nose is blocked or breathing pauses have been noticed.

Arrange an appointment if snoring is frequent, worsening, or disturbing sleep, or if you wake with choking, headaches, a dry mouth, or marked daytime sleepiness. Ask someone who shares your room whether they notice pauses, gasps, or restless breathing. Seek urgent help for severe breathing difficulty while awake, blue lips, chest pain, or sudden confusion. A clinician may examine the nose and throat and arrange a sleep assessment.

Could nasal allergy or sinus disease be affecting my breathing? Do my symptoms warrant a sleep assessment? Which nasal treatment is suitable? Could any medicine or alcohol habit worsen dryness or snoring?