Sneezing predicts three kinds of diseases, this statement is not true, it may just be caused by physiological factors; if sneezing is accompanied by other symptoms, it may predict allergic rhinitis, cold, vasomotor rhinitis and other diseases. 1. Normal phenomenon: sneezing can be caused by smelling special odor, hot or cold stimulation, etc., which is a normal reaction. 2. Allergic rhinitis: If sneezing is frequent and often occurs in spring, especially after contact with allergens such as willow, pollen, etc., accompanied by nasal congestion, itchy nose, watery nasal discharge, tearing and other symptoms, it is likely to indicate allergic rhinitis, and sneezing is mainly due to the stimulation of the nerve endings of the nasal mucosa by allergens. 3. Colds: Colds are caused by viral infections, and viral invasion of the nasal cavity leads to swelling and congestion of the nasal mucosa, and produces more secretions, so at this time, sneezing will be utilized to clear the nasal cavity of foreign bodies outside the body, and is usually accompanied by runny nose, fever, cough and other manifestations. 4. Vasomotor rhinitis: sneezing, runny nose and nasal congestion are often caused by hot and cold stimulation, exercise and diet. Frequent or persistent sneezing episodes, it is recommended to actively consult a doctor for a clear diagnosis.