Itchy skin in summer may be caused by prickly heat or eczema, which needs to be improved by external use of prickly heat powder, glucocorticosteroids and oral antihistamines for specific reasons. 1. Prickly heat: Prickly heat is a kind of disease that is easy to occur in the hot, hot and humid environment in summer, and the disease can lead to the appearance of rash in summer, accompanied by itching symptoms. The treatment should keep the skin dry and clean, and can use glycerin lotion, prickly heat powder, hydrocortisone ointment and other drugs to apply externally, and can also take oral loratadine and other drugs to improve the itching. 2. Eczema: Eczema is an inflammatory disease of the superficial dermis and epidermis caused by a variety of reasons, the disease can also lead to skin rashes and itching in the summer, the treatment can be topical dexamethasone ointment, mometasone furoate gel and other glucocorticosteroid drugs for treatment. In addition to the above diseases, other factors can also lead to itchy skin in summer, it is recommended to consult a doctor in time to identify the cause and ask the doctor to deal with it. Specific medication should follow the doctor’s prescription.