Based on the description of the red, swollen patches on your daughter's body, it sounds like she may be experiencing a case of hives, also known as urticaria. It's good to hear that she doesn't have any other symptoms besides slight itching. To help relieve the itching and discomfort, you can apply a fragrance-free moisturizing cream like Aveeno or Cerave as often as needed. It's also important to use a gentle, unscented soap when bathing and avoid vigorously rubbing the skin afterwards. These non-pharmacological measures are usually sufficient for treating hives, but if the symptoms persist for more than 7 days without improvement, it's recommended to consult a doctor for further evaluation.