If the baby has eczema, the hot weather and increased sweating during summer can easily aggravate the condition. Therefore, it is essential to keep the child cool. If it is hot outside and the child is sweating profusely, try to keep the child indoors, preferably in an air-conditioned room. However, the air in air-conditioned rooms is quite dry, which can also worsen eczema. In such cases, it is necessary to use a humidifier, which can effectively prevent worsening of eczema due to heat and excessive sweating during summer. Additionally, even in summer, it is important to keep the child's skin moisturized. If the eczema is particularly severe, it is also necessary to use mild corticosteroid creams under the guidance of a doctor. Children who are formula-fed should continue with amino acid-based formula and hydrolyzed protein formula.