Editing Snoring (section)

===Nasal cavity===
[[File:Illu nose nasal cavities.jpg|thumb|right|alt=Sagittal section of nasal cavity (nose). |Sagittal section of nasal cavity (nose).]]
While it is generally not possible for the rigidly supported structures inside the nose to vibrate, the patency of the nasal airway is important in the development of snoring.<ref name="Stuck2019" /> The [[nasal cavity]] causes over 50% of the total airway resistance, particularly at the [[internal nasal valve|internal]] and [[external nasal valve]]s.<ref name="Yap2022" /> The internal nasal valve is located approximately 1.5 cm from the nostril and constitutes the narrowest part of the upper airway.<ref name="Kiyohara2016">{{cite journal |last1=Kiyohara |first1=N |last2=Badger |first2=C |last3=Tjoa |first3=T |last4=Wong |first4=B |title=A Comparison of Over-the-Counter Mechanical Nasal Dilators: A Systematic Review. |journal=JAMA Facial Plastic Surgery |date=1 September 2016 |volume=18 |issue=5 |pages=385–9 |doi=10.1001/jamafacial.2016.0291 |pmid=27367589}}</ref> The external nasal valve is the tissue immediately around the nostril. [[Nasal valve collapse]] refers to weakening or narrowing of the supporting cartilage at the nasal valves. As per the [[Hagen–Poiseuille equation]], a minimal reduction in the diameter of a tube (in this case the nasal airway) results in an exponential change in airflow.<ref name="Casale2023">{{cite journal |last1=Casale |first1=M |last2=Moffa |first2=A |last3=Giorgi |first3=L |last4=Pierri |first4=M |last5=Lugo |first5=R |last6=Jacobowitz |first6=O |last7=Baptista |first7=P |title=Could the use of a new novel bipolar radiofrequency device (Aerin) improve nasal valve collapse? A systematic review and meta-analysis. |journal=Journal of otolaryngology - head & neck surgery = le Journal d'oto-rhino-laryngologie et de chirurgie cervico-faciale |date=22 June 2023 |volume=52 |issue=1 |pages=42 |doi=10.1186/s40463-023-00644-7 |doi-access=free |pmid=37349806 |pmc=10286448}}</ref> Nasal valve collapse is a cause of snoring.<ref name="Dhingra2017" /><ref name="Casale2023" />

[[Nasal congestion]] (nasal obstruction) reduces sleep quality.<ref name="Yap2022" /> Common reasons for nasal obstruction are [[allergic rhinitis]] and [[nonallergic rhinitis]].<ref name="Yap2022" /> [[Nasal septum deviation]] and [[inferior turbinate]] hypertrophy (enlargement) are present in almost all cases of snoring and obstructive sleep apnea.<ref name="Yap2022" /> Masses in the nasal cavity such as [[nasal polyp]]s or [[Paranasal sinus and nasal cavity cancer|tumors]] may also cause snoring.<ref name="Deenadayal2022" /><ref name="Dhingra2017" />