Why are mosquito bites itchy?

 

The body releases histamine in response to a mosquito bite. This histamine causes the blood vessels to open and leak fluid into the tissues, leading to the characteristic itchy and swollen bite.

Some people are more sensitive to mosquito bites than others. In addition, some mosquitoes carry diseases, such as West Nile virus or malaria, which can cause more serious reactions. There are a few things you can do to relieve the itchiness of a mosquito bite:

• Apply a cold compress to the bite.
• Apply a topical antihistamine or other anti-itch cream.
• Take an oral antihistamine.
• Avoid scratching the bite.