Does obstructive sleep apnoea cause blocked nose?

A blocked nose increases resistance to airflow, which can encourage mouth breathing and make sleep feel less comfortable. Obstructive sleep apnoea itself is caused by repeated narrowing of the upper airway during sleep, so nasal congestion may worsen the breathing pattern without being its only cause. Allergies, a cold, sinus inflammation, a deviated septum, nasal polyps and overuse of decongestant sprays can all cause blockage.

Notice whether congestion changes with seasons, pets, dust, lying down or a particular room. Snoring, witnessed pauses, gasping, dry mouth and morning headaches are useful details to share with a clinician.

Book an appointment if blockage lasts, keeps returning or disrupts sleep. A clinician can examine the nose, review allergies and medicines, and decide whether sleep-apnoea testing is appropriate. Saline rinses may soothe some nasal symptoms when used with safe, clean water and the product instructions. Avoid prolonged use of topical decongestant sprays unless a clinician advises it, because congestion can rebound. Do not change prescribed breathing equipment without guidance.

Get urgent help for severe breathing difficulty, swelling of the face or throat, confusion, blue lips or inability to stay awake. Seek prompt review for one-sided blockage with bleeding, facial swelling, severe pain, high fever or symptoms that are steadily worsening. Loud snoring with witnessed breathing pauses also merits medical assessment.

Could allergies or a structural nasal problem be contributing? Do my night symptoms suggest sleep apnoea? Which nasal treatment is safe for my medicines and how long should I use it?