It seems that your child had an allergic episode / hives due to some allergen.
It could be due to some food which she never took before. If you can identify if, please don't put it in your child's diet.
If the symptoms are limited to redness
, no more treatment is necessary. Antihistamine medicine (cetirizine, levocetirizine
) can be given to decrease symptoms. However, if the child becomes drowsy, difficult respiration, feels something in throat - go to emergency medical care immediately.
Please visit your pediatrician
for confirmatory diagnosis and treatment if the problem persists.