Why do blisters appear after mosquito bites?

Mosquitoes are insects that affect people's lives. They are very harmful and can spread many diseases. They are a potential hazard to people's health. Most mosquitoes are harmless, but some mosquitoes themselves carry some viruses, which cause various pathological reactions in the bitten area. Let's take a look at how blisters appear after a mosquito bite?

Why do mosquito bites swell?

In fact, it should be said that I was bitten by mosquitoes. Mosquitoes cannot open their mouths, so they will not bite the skin. In fact, they use six needle-like structures to pierce human skin. These mouth needles form the center of their feeding mouth apparatus. These proboscis act like a needle to draw blood; the mosquito also releases saliva containing anticoagulants to prevent the blood from clotting so that it can feast in peace. When the mosquito has eaten its fill and flies away, all that's left behind is an itchy bump.

When a mosquito bites, an organic acid, formic acid, is secreted from its mouthparts. Its chemical composition is HCOOH. This substance can cause muscle soreness and can be applied at home with strong soap to quickly relieve itching. The reason is the sodium salt of higher fatty acids in soap. For example: C17H35COONa. The sodium salt of this fatty acid is alkaline after hydrolysis.

The aqueous solution of formic acid containing OH- contains H+: because the OH- in the soapy water neutralizes with the H+ in formic acid to form H2O, it can quickly eliminate the pain and itching. After being bitten by a mosquito, avoid scratching, otherwise it is easy to cause bacterial infection.

You can take the following measures to relieve itching:

1. Most people will experience symptoms such as redness, swelling, itching and pain after being bitten by mosquitoes. At this time, alkaline substances can be used to relieve the symptoms. For example, ammonia water can be used to relieve the itching, or soap dipped in water can be applied to the red and swollen area, which can relieve the itching within minutes.

2. If the bite is very itchy, flick it with your fingers first, and then apply floral water, wind oil, etc.

3. Apply or soak the itchy area with salt water, which can soften the swelling and effectively relieve itching.

4. The juice in aloe leaves can be used to relieve itching. If the area becomes red, swollen and itchy after being bitten by a mosquito, you can cut a small piece of aloe vera leaf, wash it, break it apart, and apply it to the red and swollen area a few times to reduce the swelling and relieve the itching.