What condition is characterized by the inflammation of the nasal mucosa?

The condition characterized by the inflammation of the nasal mucosa is indeed allergic rhinitis. This condition is commonly triggered by allergens such as pollen, dust mites, mold, and pet dander, leading to a variety of symptoms including sneezing, nasal congestion, runny nose, and itching. The inflammation of the nasal mucosa results from the body’s immune response to these allergens, which can lead to the release of histamines and other inflammatory mediators.

Allergic rhinitis is specifically associated with this inflammation and is distinct from other conditions listed. For instance, rhinorrhea refers solely to a runny nose, which can be a symptom of various conditions, including allergic rhinitis but does not encompass its underlying inflammatory mechanism. Sinusitis involves the inflammation of the sinus cavities and can occur in conjunction with nasal mucosa inflammation, but it is not limited to the nasal passages themselves. Otitis externa is an inflammation of the outer ear canal and does not pertain to the nasal mucosa at all. Therefore, allergic rhinitis is the most accurate choice as it directly describes the inflammation of the nasal mucosa.