What causes an itchy nose?

There are several causes of nasal itching, primarily including the following: 1. Environmental factors: Dry air, cold climate, or exposure to irritating substances may irritate the nasal mucosa, leading to nasal itching. 2. Allergies: Contact with allergens such as pollen, dust mites, animal dander, or certain foods (e.g., seafood, nuts, eggs, and milk) can trigger allergic reactions in the nasal passages, causing symptoms such as nasal itching, runny nose, and sneezing. 3. Nasal diseases: Conditions such as rhinitis (including acute rhinitis, allergic rhinitis, and sinusitis) and nasal polyps may cause inflammation or overgrowth of the nasal mucosa, resulting in nasal itching and other related symptoms. 4. Vitamin deficiencies: Deficiencies in vitamin B6 and vitamin C may also lead to nasal itching, as these vitamins play important roles in maintaining the health of the nasal mucosa. If symptoms persist, prompt medical attention is recommended.