The causes of rhinitis are generally different according to different types of rhinitis, and the common ones include: acute rhinitis, chronic rhinitis, allergic rhinitis and so on. 1. Acute rhinitis: generally refers to the acute infection of mucous membrane, belongs to a part of the upper respiratory tract infection, usually caused by viral and bacterial infections, easy to occur when the body’s immunity decreases, manifested as dryness of the nasal mucous membrane, burning sensation, nasal congestion, sneezing, runny nose, loss of sense of smell, fever, fatigue and other symptoms. 2. Chronic rhinitis: generally refers to the chronic inflammation of the nasal mucosa and submucosa, often caused by repeated episodes of acute rhinitis and stimulation of adverse physical and chemical factors, manifested by nasal congestion, runny nose, decreased sense of smell, headache, dizziness and other symptoms. 3. Allergic rhinitis: generally refers to atopic individuals exposed to allergens by IgE-mediated mediators mainly histamine release, and a variety of immune-activated cells and cytokines involved in the nasal mucosa chronic inflammatory reaction disease, manifested as nasal itching, paroxysmal sneezing, runny nose, nasal congestion, itchy eyes and other symptoms. Rhinitis can be caused by a combination of factors, usually need to pay attention to stay away from allergens, moderate exercise, improve body immunity. At the onset of the disease, actively consult a doctor for a clear diagnosis of systematic examination, in order to target treatment.