What Causes a Runny Nose with Clear Nasal Discharge?

Hello, clear nasal discharge (rhinorrhea) can occur in various conditions—for example, allergic rhinitis, or during the early stage of the common cold when catarrhal symptoms involving the nasopharynx are present. If you are particularly sensitive to irritant odors and experience concurrent nasal congestion and nasal itching, allergic rhinitis should be considered. Additionally, if cough, sputum production, fever, or other signs of the common cold are present, a concurrent upper respiratory tract infection causing catarrhal symptoms is likely, requiring appropriate treatment. Commonly used medications include antihistamines and intranasal corticosteroids. We hope this information is helpful to you. Wishing you a pleasant and healthy life!