text: I don't know if it's normal for toddlers, but I react similarly to (usually) mosquito bites. Some people just have super adverse reactions. Discomfort aside, the bites are not overly harmful, but keep and eye on them. I once had a bite become infected (presumably from the scratching) Use a marker to draw a ring around the original bite and contact your Dr immediately if it expands and/or you get a white ring around the bite.