Why do people suffer from rhinitis, rhinitis according to the cause can be divided into acute rhinitis, chronic rhinitis, allergic rhinitis, atrophic rhinitis. 1. Acute rhinitis: belongs to the upper respiratory tract infection, mainly due to the nasal mucosa or submucosal tissues are infected by viral invasion, inflammation stimulation caused by acute rhinitis, resulting in poor nasal ventilation or drainage obstruction, which can be accompanied by runny nose, sneezing, fever and other acute symptoms. 2. Chronic rhinitis: the course of the disease is usually more than 3 months. Mainly due to the patient’s malnutrition, endocrine disorders, renal disease and cardiovascular lesions and other diseases, can lead to nasal mucosal swelling, increased secretion. Acute rhinitis repeated episodes or incomplete treatment, chronic inflammation of nasal sinuses, nasal septum deviation and other structural abnormalities can cause chronic rhinitis. 3. Allergic rhinitis: chronic inflammatory disease of the nasal mucosa that occurs in atopic individuals after exposure to allergens. Patients can be due to dust mites, feathers, pollen. Fungus allergy caused by nasal itching. The symptoms of sneezing, runny nose and nasal congestion. 4.. Atrophic rhinitis: can be due to endocrine disorders, plant nerve disorders, smelly nose bacillus or diphtheria-like bacillus infection, malnutrition, genetic factors, low blood cholesterol content and other factors, causing nasal mucosa atrophy gland atrophy secretion reduction, olfactory sense of smell loss or disappearance, nasal cavity, multiple crust formation, turbinate periosteum and bone atrophic changes after the atrophy of the rhinitis, thus leading to atrophic rhinitis. In addition, the use of certain because drugs, dry environment can also lead to the occurrence of rhinitis, it is recommended that patients hospital visits, diagnosis and clear treatment.