The causes of arm peeling are usually considered as follows: 1. Consider ichthyosis, some people’s arms not only have dry, peeling skin, but also look like fish scales, that is, ichthyosis, especially aggravated in autumn and winter, and heavy in winter and light in summer. The disease is mainly a genetic skin disease, in the clinical application of salicylic acid and urea vitamin E milk mixed topical. 2, consider solar dermatitis, mainly in the hot season, the arms are exposed to the outdoors for a long time, due to ultraviolet radiation, causing damage to the skin barrier, thus appearing allergic reactions, manifested as erythema and papules on the arms, and accompanied by itching, peeling and other phenomena. For treatment, a mixture of mometasone furoate cream and urea vitamin E cream can be applied topically. If the peeling is severe and accompanied by intense itching, then you can also take oral compound glycopyrrolate tablets and levocetirizine hydrochloride tablets, and when going out, the patient is instructed to always apply sunscreen or barrier cream externally. Therefore, for the cause of arm peeling, patients need to go to a regular hospital and treat accordingly under the guidance of a dermatologist.