When your child is hot with prickly heat, you should keep the environment cool, wear loose, breathable, soft cotton clothing, warm water baths, keep the lesions clean and dry, and use medication if necessary. Prickly heat, also known as heat rash, sweat rash, is a common skin disease in summer, manifested as small blisters on the skin, small papules or mounds, can be accompanied by itching, pain, etc., generally do not need treatment, the skin can usually subside after cooling. The root cause of heat rash is mainly due to the excessive humidity and heat of the environment, so you need to keep the environment cool, through the air conditioning, fans to reduce the ambient temperature, while sweating in a timely manner after the warm water bath, to reduce the stimulation of sweat, wearing loose, breathable, soft cotton clothing to reduce friction on the skin, to help absorb the sweat to keep the skin dry. If prickly heat does not subside, medication can be used, such as glycerin lotion and prickly heat powder. When infection occurs, you can use 2% ichthyolite glycerite lotion, Huanglian puff powder and other drugs. Oral antihistamines such as cetirizine can be used if the itching is obvious. If the child is not feeling well, need to be used under the guidance of a specialist, do not blindly use drugs, so as not to cause adverse effects on the body.