Why does it not itch when you are bitten by a mosquito, but it starts to itch after walking a few st

Don't scratch, it'll be over in a while.

Almost everyone has the unpleasant feeling of being "bitten" by mosquitoes, in fact, it should be said that they are "stung" by mosquitoes. Mosquitoes can't open their mouths, so they won't bite on the **, it actually uses 6 needle-like structures to pierce people**, these short needles are the center of the mosquito's edible mouthparts. > these short needles suck human blood in the same way that they draw blood; The mosquito also releases saliva containing anticoagulants to prevent blood from clotting, so that it can feast peacefully.

When the mosquitoes are full of food and drink and float away, all they leave behind is an itchy lump. >, however, the itchy sensation is not caused by a short needle pricking or chemicals in the saliva. We feel itchy because the body's immune system releases a protein called histamine to fight foreign substances, and this immune response triggers an allergic reaction at the bite site.

Histamine causes swelling of the tissues around the bite when blood flows to the bite site to speed up tissue recovery, and the intensity of this allergic reaction varies from person to person, with some people having a more severe allergic reaction to a mosquito bite. > only female mosquitoes bite mammals because they have to suck blood every three or four days to get the protein they need to make eggs; Male mosquitoes mainly feed on nectar, while female mosquitoes use animal body heat and physiological changes to search for targets, which may be why human ankles and feet are more commonly bitten by mosquitoes, because the blood vessels in these parts are closer to the body surface, so more body heat is released.

Remember.

Title. Every year. So my legs are particularly nauseous right now.

In my house, mosquitoes bite me and it's very itchy.

It doesn't work.

Then I scratched.

Scratch it and scratch it.

And then it was dark.

Now I have scars all over my legs.

The scar on my leg was slightly better in the past two years, but this year it's like that again.

I wonder what's going on.

What else can be done to get rid of these scars?

PS: Don't advertise. Don't use those pills! I don't believe it!

Guess: A mosquito bites a person and injects a substance into the body that excites the nerves and causes you to feel itchy.

It is said that itching is a mild pain, and when you feel pain, it is actually the brain that tells you that you are being affected by something that is not good for you, and thus commands you to eliminate this bad factor.

On the one hand, tickling is saying to the brain: I'm trying to eliminate this unfavorable factor so that the brain can feel happy, which is probably why we feel comfortable tickling; On the other hand, the pain sensation produced by tickling plays a role in covering the relatively minor pain of itching; Third, tickling rejuvenates the epidermis and the capillaries underneath, spreading the itch-causing substance and dispersing its contact with nerve fibers, thereby relieving the degree of itching.

I sometimes get bitten by mosquitoes, and I only have red spots and I don't itch, so if I don't itch, it should be fine, right? If you really mind this, go to the doctor, because mosquito bites are good.

Smear some aloe vera gel and it will be good in no time.