Sneezing is categorized into physiological and pathological sneezing, which can be treated with medication if it is caused by a disease. If it is a physiological reason for wanting to sneeze it is not recommended to stop. 1. Physiological sneezing: this kind of sneezing is a normal defense reaction of the human body, sneezing can help the body to resist the outside world for the inhalation of respiratory tract damaging substances, for the respiratory system health is very favorable, no special intervention is needed. 2. Pathological sneezing: If sneezing occurs frequently, it is common in allergic diseases, such as allergic rhinitis, which requires the use of anti-allergic drugs, such as loratadine and cetirizine. If necessary, allergen testing is also needed to keep away from allergens. Acute upper respiratory tract infections, also known as colds and flu, often also appear to sneeze, commonly used phenmetrazine and so on. When the nasal discomfort should actively go to the hospital, after a clear diagnosis of standardized medication and treatment, so as not to delay the condition.