When children have chickenpox, they can eat foods and fruits rich in vitamins, such as kiwis, apples, and cherry tomatoes. During chickenpox, it is important to maintain a light and easily digestible diet, avoiding overly greasy and spicy foods. If the chickenpox is particularly itchy, topical calamine lotion can be applied to help relieve itching and prevent scratching, which can lead to infections. It is necessary to treat children with antiviral medications, as chickenpox is caused by a viral infection. (The use of medications should be under the guidance of a physician.)