Hot weather babies with heat rash, known as prickly heat, can be relieved by general treatment and topical medication. Prickly heat is caused by a large amount of sweat in a hot and stuffy environment, resulting in the narrowing or blockage of sweat ducts, manifested as blisters, pimples or mounds of herpes on the skin. 1. General treatment: ventilation should be used to dissipate heat, using air conditioners or fans to cool down; let the baby wear loose and light, breathable and sweat-absorbent cotton clothes; keep the skin clean and dry. Be careful not to let the baby scratch the affected area to avoid secondary infection. 2. medication: local topical glycerin lotion and prickly heat powder; if pustules appear, you can use ichthyol glycerin lotion. Hot weather baby heat rash, if the skin lesions symptoms are serious, continued for many days did not subside, it is recommended to go to the hospital in time for treatment, during the treatment of the use of medication as prescribed by the doctor.