How long do mosquito bites itch for?

2 Days Average. Mosquitoes don't actually "Bite" That bump is an allergic reaction and not from being chomped on. Miss Mosquito inserts salvia thru a tubular proboscis & the salvia provokes allergic havoc in some. How big the mosquito bump, how itchy, how long it stays is more often as inherited as is just who mosquitoes prefer to seek blood from.1 person, bump gone a few hours, another finds it lasts 4 days!
Longer if you itch. Them. Itching will go away within days if you don't scratch.