Usually, heat rash in infants can be self-healing. Infantile heat rash is caused by heavy sweating due to heavy clothing or high temperatures, and the sweat cannot be completely eliminated from the body. Parents can help infants to recover from heat rash by increasing or decreasing the amount of clothing, keeping the environment at the right temperature, keeping the skin dry, and bathing appropriately. Infantile heat rash is usually manifested as a rash on the skin, which usually occurs when the infant is breastfeeding, crying or exerting effort, and disappears when the skin cools down, mostly on sweaty areas such as the face, neck, elbows, groin, armpits, etc. In severe cases, it may also be characterized by severe itching and itching. Severe cases may also show severe itching, pain, burning pain, etc. If the symptoms of heat rash in infants are serious, or if the symptoms persist and do not improve, they should go to the hospital in time for treatment and under the guidance of the doctor to prevent delays in the condition.