Why Do Mosquito Bites Itch?

Sucking blood by mosquitoes is a common phenomenon around the world. There is hardly any place on the planet where these pests don’t exist. They are one of the experts in sucking your blood without even your knowledge.

Some scientists also say that this process of sucking human blood is 46 million years old. Mosquitoes can disrupt your daily life while you are enjoying the best time of the day. Mosquitoes thrive during the summer.

They can dampen your summer activities leaving you with itchy and red bumps all over your body. They can potentially cause serious diseases like the Zika virus, malaria, dengue, and various other life-threatening diseases. 

Mosquito bites are of multiple forms. They are sometimes reddish in color, while at times they may seem puffy. It can also seem like whitish, small blisters, or even seem like small bruises. Though, all these bites start to disappear within a few days after the bite. Most adults do not develop any reaction, but children can develop a few allergic symptoms as a result of the bite. However, with growing age, few adults have allergic reactions in their bodies.

However, if you get a mosquito bite at home, it can hardly bother you. But while traveling abroad to some other country where mosquitoes are abundant, you may notice some skin irritations or rash. As everybody is different in the world, therefore the reaction also varies from person to person.

The reason behind the itchiness

The reason for their bite is that the mosquitoes needs supply of protein constantly so that their eggs can flourish. Hence, it is females that bite you. The female mosquitoes find their host through their body odor, the air that you exhale, and the heat. Several other factors are also the reason that gives rise to a mosquito bite.

Another reason that goes for a mosquito bite is that they use a needle to pierce the skin of a person to suck the blood. During the biting process, it injects some of its saliva that has few proteins and anticoagulant properties.

This anticoagulant property helps the blood from clotting around the mouth of the mosquito. Hence, the mosquitoes release a protein which in turn produces histamine from the human body. This compound provides the entry of the body’s white blood cells to the injected area.

There is a hike in blood flow and the white blood cells through the histamine cause the skin to develop swelling and inflammation. This histamine is responsible for sending signals to the brain and finally causes the itch.

Most of the people experience this swelling and itchiness, but the rest of them doesn’t even notice this biting. Sometimes, few adults do not develop any reaction to a mosquito bite. Several adults who are receiving the bite from the same mosquito tends to develop a bit of resistance.

As a result, they are less prone to itching and swelling. But, people who like to travel to new places may experience various mosquito species. These people are also having lesser chances of developing itchiness and reactions.


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