Heat rash can be treated by general care or by applying medication to relieve the discomfort. 1. General care: Heat rash is caused by high ambient temperatures that prevent sweat from being discharged. Use fans or air conditioners to cool down the environment, choose loose-fitting, pure cotton clothing, and keep the skin clean and dry. 2. Medication: You can use some cool, anti-itching drugs, such as prickly heat powder or glycerine lotion, which can alleviate the discomfort, and itching can be taken orally antihistamines, such as loratadine, cetirizine, etc. If you have any discomfort, please go to the hospital promptly. If you have any uncomfortable symptoms, please go to the hospital in time, according to the doctor’s guidance for treatment, the use of drugs need to follow the doctor’s instructions.