Why Does Sinusitis Cause One Nostril to Be Blocked?

When sinusitis causes unilateral nasal obstruction, the situation may be related to nasal cavity structure, the degree of inflammation, or related complications. If accompanied by obvious symptoms such as headache and high fever, medical attention should be sought as soon as possible. Sinusitis occurs when the mucosa inside the sinuses becomes infected or inflamed, causing secretions to be unable to drain smoothly, thereby leading to nasal obstruction. Unilateral nasal obstruction is usually related to inflammation concentrated in the sinuses on one side, such as the maxillary sinus or ethmoid sinus. If there are deviations in nasal cavity structure, such as a deviated septum, it may also exacerbate unilateral nasal obstruction. When the nose is obstructed, one may feel shortness of breath, and even sleep may be affected. Some people may also experience a heavy head, decreased sense of smell, or even produce thick or colored mucus. Depending on the situation, some home care methods can be adopted, such as using saline to clean the nasal cavity, which can help clear accumulated secretions and keep the nasal mucosa moist. If symptoms are mild, the use of topical decongestants can also be considered, but long-term use should be avoided to prevent the development of rhinitis medicamentosa. If unilateral nasal obstruction persists for a long time, especially if accompanied by severe headaches, facial pain, or recurrent symptoms, a hospital visit is necessary. Doctors may use endoscopy or imaging methods to determine the cause and provide targeted treatment, including medication or surgical intervention when necessary, to prevent further development of chronic inflammation. Paying attention to replenishing water and maintaining appropriate indoor humidity can help alleviate discomfort in the nasal mucosa.