How come when mosquitoes bite u it itches?????????????!

all i know is that stuff they put in you is this liquid or something that thins out your blood, because they cant suck it , its too thick!. in six grade science camp i learned that if you make and X with your nail over the bump it stops the itching!.Www@Answer-Health@Com

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Because mosquitoes inject a small amount of their saliva into your skin when they land on you!. Their saliva contains a mixture of proteins that help thin your blood and dilate the blood vessels around the bite, among other things!. This helps them obtain blood, which they feed on!. When the saliva is injected, your body's immune system recognizes it as a foreign substance (one that isn't normally in your body)!. The immune system reacts by releasing histamines (which fight against the foreign substance and try to destroy it)!.!.!.the result is itching, redness, and swelling where the mosquito bit you!.Www@Answer-Health@Com

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the mosquitoes saliva reacts with your skin and thus causes a bump that itchesWww@Answer-Health@Com

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