Heat rash is a physical skin disease caused by high temperature, due to sweat can not be discharged in time, stored in the skin after the formation of heat rash, can be eliminated through general treatment, medication and other methods of heat rash. 1. General treatment: Don’t stay in the hot and humid environment for a long time, keep the surrounding environment temperature cool and suitable, wear loose and breathable clothes, and keep the skin clean and dry. For prickly heat that has already formed, it will gradually subside after the temperature drops. 2. Use of medication: Some medications can be used externally to eliminate prickly heat, such as the use of glycerite lotion, prickly heat powder and so on. If the itching is obvious, you can take antihistamine drugs such as cetirizine orally. If secondary bacterial infection. You can use topical antibiotic drugs such as mupirocin ointment. Heat rash, if the symptoms can not be relieved, it is recommended to go to the hospital in a timely manner, the above drugs need to be used in accordance with medical advice.