"The nasal cycle is a process where the mucous membranes and erectile tissue inside ... as cited by Freundin. This swelling alternates between nostrils every few hours, allowing one side to ...

Excessive blowing, rough tissues, and nose-picking can worsen irritation, swelling, and increase the risk of nosebleeds. Frequent or forceful blowing can irritate and inflame the mucus membranes ...

A further barrier to nasal delivery is the existence of tight junctions between epithelial cells in the mucous membranes inside the nose, which can prevent the penetration of large molecules such as ...