How does it itch to be bitten by mosquitoes that suck on insects? Why does it itch? What kind of medicine should I put on?

In summer, what is most difficult for people to endure is the itching of the skin caused by mosquito bites. What if the mosquito bites are very itchy? Why does it itch? What kind of medicine should I put on? What are the best ways to prevent mosquitoes?

Mosquitoes belong to the family Diptera, Insecta. There are about 3000 species in the world. It is a small flying insect with piercing and sucking mouthparts. Usually females feed on blood, while males feed on plant juices. Blood-sucking female mosquitoes are intermediate hosts of other pathogens such as dengue fever, malaria, yellow fever, filariasis, Japanese encephalitis and so on. Mosquitoes are found on all continents except Antarctica. Among them, Anopheles, Aedes albopictus and Culex pipiens are the most famous.

Why does it itch when bitten by mosquitoes?

While absorbing human blood, mosquitoes secrete several proteins, collectively known as "mosquito saliva proteins", which is the reason why people itch after being bitten by mosquitoes.

As we all know, it is not long before people's blood clots outside. But few people know that the saliva of female mosquitoes contains an anticoagulant to prevent human blood from clotting. In order to eat smoothly, female mosquitoes use piercing mouthparts to suck blood, not only absorb human blood, but also secrete protein to prevent blood clotting.

When mosquitoes secrete proteins, the body's immune system is mobilized to try to remove these foreign substances, resulting in an immune response. In this process, a substance called histamine is released, which dilates the capillaries, increases the permeability of the walls of the blood vessels, and fills the cells with fluid, leading to inflammation. At this time, the place bitten by mosquitoes itches, redness and swelling.

What is uncomfortable is the itching of the bite, which is caused by the fact that the body's immune system does not have to fight with mosquito saliva proteins, which is actually an allergic reaction. Allergies caused by mosquito bites appear quickly after being bitten for a few seconds, but disappear quickly and disappear after a day, while some reactions do not appear until a day later, lasting for a few days or even many geniuses disappear.

What if the mosquito bite is very itchy?

In China, most of the mosquito repellent and anti-itching products we can buy from ordinary supermarkets are exaggerated and publicized, but the actual effect is very small. usually, our symptoms after being bitten by mosquitoes are almost self-healing.

If you do have a lot of mosquitoes around, you can use mosquito repellent products containing DEET (remember to read the composition list on the instructions when buying mosquito repellent products).

DEET is an anti-mosquito bite drug recommended by FDA in the United States. It is very safe and can be safely used.

However, it should be noted that DEET has taboos for children of different ages, such as mosquito repellents that prohibit DEET under 2 months of age, and insect repellents with a concentration of more than 30% under 12.

As for pregnant women can rest assured to use, these ingredients will not affect the fetus.

With regard to relieving itching, you can choose calamine or menthol ointment. Products that do not contain the above ingredients are basically deceptive.

The most effective way to prevent mosquitoes

1, cool oil or wind oil essence: dripping an appropriate amount of wind oil essence on the whole plate of mosquitoes can make mosquito incense not choking, and full room fragrance, mosquito repellent effect is very good. You can also sprinkle a few drops of wind oil on the mosquito net before entering the mosquito net to improve the air condition in the mosquito net and increase the mosquito repellent effect.

2. Use less soap and perfume: mosquitoes like to eat honeydew. Mosquitoes are more likely to be bitten by mosquitoes after using perfumes, cosmetics, creams and other floral items, but not all scents attract mosquitoes. Men's cologne has the effect of repelling mosquitoes because of sandalwood scent.

3. Install mosquito nets or screen windows: mosquito nets and screen windows are the most common and simplest anti-mosquito methods. Installing mosquito nets and screen windows can physically isolate mosquitoes, and mosquito nets can prevent dust and dust, which is suitable for the elderly and children. The screen window can make the room ventilated and keep the air fresh.

The most effective way to kill mosquitoes

1. Boiled vinegar is dished into the room without closing the door and will not be disturbed by mosquitoes all night.

2. Fill a bottle with sugar water or beer in a dark place. Mosquitoes smell sweetness and get stuck to death by beer or sugar water when they get into the bottle.

3. Lighting dried orange peel indoors can replace mosquito incense, which can not only repel mosquitoes, but also eliminate the smell in the house.

4. When using mosquito repellent, the mosquito repellent effect is better after one brand has been used continuously for two months.

5. Put a basin of water mixed with laundry detergent in front of the window, and soon there will be some dead mosquitoes in the basin.

6. Put a few boxes of wind oil essence and cold oil with open lids in the room, or spread some mint on the wall.

7. Sprinkle some perfume on the body or bedding, or you can grind the camphor balls and scatter them in the corner of the house.

8. Plant one or two tomatoes in an indoor flowerpot, and the smell of tomato branches and leaves will drive away mosquitoes.

9. Ignite moxa or moxa sticks every night, and the smoke emitted can quickly smoke mosquitoes away.

How long is the life span of mosquitoes?

The lifespan of mosquitoes is about 7 to 10 days after mating under natural conditions, but it can live up to 1 to 2 months in the laboratory. Female mosquitoes generally live for one to two months, and have lived for four months in the laboratory.