The red spots on the baby’s body when it is hot are related to eczema, allergies, prickly heat and other factors that cause eczema, which can recur throughout the year and is also a relatively stubborn skin disease. When eczema first appears, there will be small papules and oozing on the skin, followed by crusting and flaking, and repeated episodes of long-term failure to heal will also lead to localized itching in the child, and if serious, it will spread to the whole body. If the weather is hot and allergic to clothing on the body, it will cause small red spots, red spots, hives, eczema and other manifestations on the baby’s body. In the hot summer baby sweat more pores are easily blocked, in the baby’s neck, chest and back or body folds, there will be some small red papules, resulting in local itching, red, and also accompanied by local oozing performance.