Prickly heat is also known as corn rash in medicine. Corn rash is a superficial, inflammatory skin disease mostly seen in summer or hot environments, and there is no such thing as the best way to treat it, but the discomfort can usually be relieved by means of general treatment and medication. 1. General treatment: Pay attention to indoor ventilation and avoid hot and humid air. Keep the skin clean and dry, wear loose clothing to minimize friction on the affected area. Avoid scalding hot water and scratching the affected area with your hands, and apply ice packs as appropriate. Also pay attention to a light diet, do not eat spicy and stimulating food. Usually after cooling and drying of the skin, the granuloma can disappear on its own. 2. Medication: If the symptoms are not relieved after general treatment or if the symptoms are serious, medication can be used. Generally can be used externally prickly heat powder, glycerine lotion, hydrocortisone cream and other drugs to relieve itching or infection symptoms are serious, can be taken orally loratadine, amoxicillin and other drugs treatment. The use of drugs must be guided by a doctor according to the condition of the drug, not blindly use drugs to avoid the risk of drug use. If there is no relief of symptoms or discomfort after using the medication, you should seek medical attention.