Allergic rhinitis is a chronic inflammatory disease of the nasal mucosa that occurs in atopic individuals after exposure to allergens. Allergic rhinitis is usually the result of a combination of genetic and environmental factors. Exposure of atopic individuals to allergens is the main cause of allergic rhinitis. The main symptoms of allergic rhinitis are episodes of sneezing, runny nose, nasal congestion, and impaired sense of smell. Patients with allergic rhinitis should first avoid exposure to allergens and apply second-generation antihistamines, such as cetirizine and loratadine; leukotriene receptor antagonists, such as montelukast sodium; nasal glucocorticosteroids, such as budesonide nasal spray; nasal decongestants, such as furosemide nasal drops; and nasal rinsing to flush out allergens and secretions from the nasal cavity and to improve the allergic symptoms. Drugs must be applied under the guidance of a doctor. When the symptoms of itchy nose, sneezing and runny nose and nasal congestion occur, it is recommended to consult the hospital for a clear diagnosis and standardized treatment.