Children with hives should get immediate medical care if they also have swelling around the lips or mouth, swelling in the throat, wheezing, or difficulty breathing.
These symptoms can be a sign of a severe allergic reaction known as anaphylaxis. If someone has these symptoms, dial 911 or contact the nearest emergency department.
Other symptoms that can indicate anaphylaxis include:
- fainting or loss of consciousness
- a child becoming “floppy” or unresponsive
- confusion
- agitation
- blue or pale skin
- a racing heartbeat
- abdominal pain
- nausea or vomiting
If a child has none of these symptoms and is only experiencing hives, they may get better on their own. Hives are usually temporary, and most cases do not need treatment.
Hives are itchy welts on the skin that often result from an allergic reaction. They may stop appearing when the child is no longer in contact with the allergen.
Other potential causes of hives include:
- viral illnesses such as colds and COVID-19
- something pressing on the skin
- cold or hot temperatures
However, sometimes the cause of hives is unclear. Most cases will still improve on their own.
Hives that do not go away in 2 days or that keep coming back warrant medical attention. Other symptoms people should discuss with a doctor include:
- swelling under the skin
- fever
- feeling unwell
Anyone who is worried about a child’s hives can also speak with a doctor for advice.