Why do I have a lot of snot when I have a cold?

That's a cold and flu, eat some kernels and clicks.

If you have a cold, don't you spend some money on tissues?

When the cold virus invades the body from the respiratory tract and causes a person to catch a cold, the virus moves through the nasal cavity, causing the nasal mucosa to swell, and the nose secretes more extra water or mucus (secretions) to help us get rid of the dead virus naturally. If the original clear nasal discharge turns into yellow nasal discharge, it means that the nasal cavity has been inflamed by other bacteria or viruses, and the yellow and clear nasal discharge is like pus.

How does nasal mucus come about?

The inner surface of the nasal cavity of healthy people is lined with a complete layer of mucosa, on which there are many goblet cells with secretory function, and there are mucous glands under the mucosa, which usually carry out secretory activities, and the secreted water is used to moisten and inhale air, in addition, the mucus glands often secrete a small amount of mucus, which is evenly distributed on the surface of the mucosa. It is very viscous and can adsorb dust and microorganisms in the air inhaled. Mucus also contains lysozyme, which has the ability to inhibit and dissolve bacteria.

Under normal circumstances, relying on the cleansing effect of this mucus, the inhaled air reaches the back half of the nasal cavity with little to no microorganisms.

Normally, the fluid secreted by the nasal mucus glands and the fluid that is evaporated are in relative equilibrium. Once pathological changes occur in the nasal cavity, the discharge may increase, resulting in the formation of nasal discharge.

Cold, commonly known"Cold", is a common respiratory disease caused by a variety of viruses, of which 30% to 50% are caused by a serotype of rhinovirus. Although the common cold usually occurs in early winter, it can occur in any season, such as spring and summer, and the pathogenic virus of colds in different seasons is not exactly the same. The distribution of cold cases is sporadic, does not cause epidemics, and is often susceptible to bacterial infection.

The onset of the common cold is more acute, and the early symptoms include dry itching or burning sensation in the throat, sneezing, nasal congestion, runny nose, which begins as watery nasal discharge and thickens after 2 to 3 days; May be accompanied by sore throat; Fever and constitutional symptoms are usually absent, or there is only low-grade fever and headache. It usually takes 5 to 7 days to heal.

Runny nose is caused by damage to the nasal mucosa.

Because there is a mucous membrane in the nostrils of a person, the snot that we usually run is made by him. When a person has a cold, bacteria and viruses will mess up in the nose, causing the nasal mucosa to become inflamed, congested and swollen, and a lot of nasal mucus will come out. Add to that the fact that there is a passage between the nose and the eyes, and a part of the tears go into the nose along this passage, and the snot appears to be even more.

When you have a cold, you will have symptoms such as runny nose, sneezing, and nasal congestion, and when you have a cold, the nasal mucosa will be attacked by a virus, and it will become congested and swollen, and the secretion of glands will increase, and a runny nose will occur.

A cold, also known as an upper respiratory tract infection, is caused by a virus that enters the body when the body's resistance is reduced. The virus mainly invades the upper respiratory tract, including the nose and throat. It is mainly spread through airborne droplets.

The common cold is mainly manifested by nasal congestion, runny nose, sneezing, sore throat and other symptoms, while the epidemic is mainly characterized by systemic symptoms, manifested as fever, general weakness, poor spirit, poor diet, muscle aches and other symptoms.

Under normal circumstances, the nasal hairs in the nasal mucosa have the effect of blocking dust, while the role of the nasal mucosa is to moisten, regulate the temperature, and filter the air entering the nasal cavity. Under the action of the nasal mucosa, the temperature that enters the nasal cavity from the outside reaches the appropriate temperature and humidity.

When the external environment changes and the body's resistance is reduced, some bacteria and viruses in the air will invade the nasal mucosa, resulting in dilation and congestion of the blood vessels of the nasal mucosa. The nasal mucosa will be locally edematous and exudate, which will increase the local secretion to facilitate the local excretion of bacteria and viruses from the nasal mucosa.

When the air pollution is very serious, some harmful components in the air will enter the nasal mucosa, causing damage to the nasal mucosa, in addition to symptoms such as runny nose, it may also lead to erosion and bleeding of the nasal mucosa.

After suffering from a cold, oral cold medicines are usually used, many cold medicines contain anti-allergic ingredients, these anti-allergic drugs have an inhibitory effect on the secretion of glands in the nasal mucosa, which can reduce symptoms such as runny nose and nasal congestion. But these colds should also have a certain ***, that is, after taking it, it may cause the human body to feel like sleeping, for drivers, people who control the machine It is best not to take this kind of cold medicine.

It is the secretion of submucosal blood vessels and tissue metabolism after the nasal mucosa is congested