Prickly heat is usually caused by the blockage of sweat ducts in hot and humid environment, which can be dealt with by general treatment such as cooling and drying of the skin, and medication can be applied in serious cases. 1. General treatment: prickly heat is a common skin disease in hot season or hot and humid environment. The patient’s skin will show symptoms such as small blisters, papules, pimples, itching and tingling. When the symptoms are mild, you can use air conditioners and fans to cool down the skin and keep it dry, bathe in warm water to keep the skin clean, wear loose and breathable clothes, and the prickly heat will usually subside on its own after the cause of the disease is removed. 2. Medication: If the symptoms of prickly heat are serious, you can use powder or lotion with astringent and anti-itching effect, such as glycerine lotion, etc. For patients with severe itching, you can apply antihistamines such as levocetirizine hydrochloride and loratadine for treatment; and if the infection is secondary to prickly heat, you can follow the doctor’s instruction to use external fusidic acid cream, oral penicillin, and other sensitive antibiotics for treatment. Prickly heat patients need to use drugs, it is recommended to use drugs under the guidance of a doctor, not blindly self-medication, so as not to cause serious adverse reactions.