Heat rash on the forehead of the child is a long time in the high temperature environment, sweat duct discharge obstacles, sweat seepage triggered by inflammation, can be relieved by medication such as glycerin lotion, prickly heat powder and other general treatment methods to alleviate the symptoms. 1. Medication: mainly external drugs, commonly used external drugs are prickly heat powder, glycerite lotion, etc. If there is red prickly heat, you can use topical glucocorticoid ointment to apply treatment, such as hydrocortisone and so on. 2. General treatment: patients should keep the traumatized area cool and dry, take a bath with warm water every day, wear loose and breathable clothes as much as possible, and also use ice packs to apply ice to the lesion area appropriately. If the symptoms of heat rash on the forehead are not relieved, or more serious, you should go to the hospital in a timely manner, the use of drugs need to be used under the guidance of a doctor, to avoid self-medication.