Sneezing what

summary

Sneezing often occurs in our daily life. It can appear alone, or it can be the symptom of other diseases. Let's see what sneezes.

Sneezing what

First of all: sneezing refers to a kind of unconscious "reflection" when driving away foreign bodies (such as dust, bacteria, pollen, etc.) into the nasal cavity. After the foreign body enters, the trigeminal nerve on the nasal mucosa sends out instructions to the respiratory muscles acting on the lungs, expelling the foreign body violently.

Second: people sneeze for four reasons. When they sneeze when they have a cold, the sneezing comes from the blood vessels in the nose and becomes allergic to humidity, temperature and even spicy food. The fourth most common cause of sneezing is non allergic rhinitis, stuffy nose, sore throat, itchy eyes and tears. If the situation is more serious, it is best to see a doctor for diagnosis,

Finally: a defensive respiratory reflex caused by stimulation of the nasal mucosa or nasopharynx. The receptors are located in the nasal mucosa and the afferent nerve is the trigeminal nerve. The reflex center is mainly the respiratory center of medulla oblongata. Reflexes are similar to coughing. They start with a deep inhalation and then produce a rapid and powerful exhalation.

matters needing attention

Put an end to the habit of digging nose by hand. Blow your nose one by one at ordinary times. Don't blow too hard. Keep the temperature of indoor air or use an air filter. Don't let your nose dry. If you sneeze often, it's better to reduce going out, and find out your allergen and actively deal with it.