Treatments for stopping an itchy nose caused by allergies include nasal sprays and medicines, steroid nasal sprays and immunotherapy. If the itchy nose is not caused by allergies, treatment depends on the underlying cause, states Patient. An itchy nose is commonly caused by nose inflammation, also known as rhinitis.
Corticosteroids, decongestants and leukotriene inhibitors help stop an itchy nose. Hay fever and allergens, such as dust, pollen and grass, are causes of an itchy nose, according to MedlinePlus. Other causes include medication side effects, hormonal changes, stress and abuse of nasal sprays, says Patient. If an itchy nose becomes too severe and causes nasal polyps, surgery may be required to relieve the symptoms.