Mosquito bites are the itchy bumps that appear after mosquitoes use their mouth to puncture your skin and feed on your blood.  Occasionally a mosquito bite causes a large area of swelling, soreness and redness.
Mosquito bites have these characteristics:
A puffy, white and reddish bump that appears a few minutes after the bite
A hard, itchy, reddish-brown bump, or multiple bumps, appearing a day or so after the bite or bites
Small blisters instead of hard bumps