If a child has eczema, in principle, we do not recommend the routine use of calamine. Calamine has an antipruritic effect, but after use, the local skin becomes particularly dry, which can exacerbate eczema. Therefore, when a child has eczema, the first thing we must do is to maintain the local skin's moisture. Apply a thick layer of moisturizer, and on top of that, under the guidance of a hospital doctor, use some mild corticosteroid creams. Although calamine can relieve the local skin itching symptoms caused by eczema, it ultimately has no therapeutic effect on eczema, so we do not consider calamine as a common medication for treating eczema. (The use of medications should be carried out under the guidance of a professional doctor.)