Prickly heat is caused by the high temperature and humidity in the environment, excessive sweating is not easy to evaporate, sweat is impregnated with the epidermal keratin layer resulting in the occlusion of the sweat gland ducts, herpes and papules occur to form prickly heat. Red generally occurs in the summer, acute onset in batches, so first of all should strengthen indoor ventilation heat, so that the environment is not too humid, the temperature is not too high, reduce sweating to facilitate the evaporation of sweat. Wearing clothes should be wide and breathable, at the same time to replace the sweaty clothes, avoid scratching to prevent secondary infection, keep the skin clean and dry, you can often use a dry towel to wipe sweat or bath with warm water after sprinkling powder. The powder can be chosen to clear heat and cool blood detoxification powder, such as prickly heat powder external puff or use cool anti-itch lotion, such as mint stove glycerine lotion, if there is secondary infection can be used externally ichthyol stove glycerine lotion effect is very good, when the climate becomes cooler heat rash will be quickly cured. Chinese medicine identifies heat and dampness, so the main treatment principle is to clear the heat and dampness, so children can often take mung bean soup, honeysuckle lotion or ground bones decoction as tea.