Stay away from hot and humid environments, apply or take oral medication when your baby has prickly heat. 1. Stay away from hot and humid environments: When babies always have prickly heat, it may be caused by the environment. Stay away from hot and humid environments and go to cool and dry, ventilated and cool places, which may be conducive to the relief of symptoms. At the same time, pay attention to frequent bathing, choose loose, soft clothing. 2. Apply medication: If prickly heat symptoms are not serious, you can use prickly heat powder or glycerite lotion for treatment; if it is red prickly heat, you can also use topical glucocorticoid ointment such as hydrocortisone. 3. Oral medication: If prickly heat is severe, oral antihistamines such as cetirizine dispersible tablets, fexofenadine hydrochloride and loratadine tablets should be taken. For the secondary infection of prickly heat, you need to take oral antibiotics for treatment, such as azithromycin and so on. It is recommended to go to the dermatology department of the regular hospital, strictly follow the doctor’s instructions to standardize the treatment, avoid blind self-medication, so as not to cause adverse consequences.