@ysmina-- You need to see her pediatrician.
Allergic reactions and eczema can look similar but doctors can tell them apart. I have also heard that people who suffer from food and seasonal allergies are more likely to suffer from eczema. So the dry bumpy skin could be caused by both.
Have you applied an over-the-counter allergy cream like corticosteroid on the bumps? Did it help? If so, it might be food or fabric allergies.