When I get a mosquito bite, why am I so itchy all over?

Question

I know I am bit because I itch all over.

Answer 1

Well when a mosquito bites a person, they will try to get the blood to flow better. In order to do this, they will inject an anticoagulant, that prevents the blood from clotting and makes it easier for them to suck up the proboscis. The chemical that they inject into humans usually triggers a slight allergic reaction, that is why there is typically a swollen area that is quite itchy. If you are experiencing itchiness all over your body then you probably have severe allergies to this anticoagulant. It would be best to maybe take some antihistamines or speak to your doctor about something you can take to reduce the itchiness you are experiencing.
I hope that helped!
Good Luck!

Answer 2

Because your body reacts in an uncommon manner. Their saliva is normally constricted to the red swollen spot that itches, but in some persons, tissues fail to isolate the saliva, this travels in blood and spreads, then body reaction sends signals of itchiness everywhere saliva is in higher concentration, until it dilutes enough for leukocytes to kill it.

Answer 3

because you're allergic to the stuff they use to keep your blood from clotting when they suck your blood