Hives, also known as urticaria or welts, are swollen areas on the skin.
They can show up in different shapes and sizes, but are generally well defined, with a pale, central, raised area surrounded by a red border.
And they usually itch.
Your baby may have a group of hives that disappears after a few minutes or a few hours, only to have a new crop show up elsewhere.
If your baby breaks out in hives, they could last from a few hours to a few days, although it's possible to have hives for months at a time.
Hives are common, but not contagious.
What causes eczema?
My baby has scaly red patches on her skin that seem to be very itchy. What is this ugly rash?
When should I call the doctor?
How should I treat hives?
What causes hives?
Should I take my baby to the doctor for heat rash?
How can I prevent heat rash?
How should I treat heat rash?
Is heat rash painful for my baby?
Is heat rash serious?