There are many cases of back itching: First, it is related to seasonal factors, especially in autumn and winter. The climate of the season is dry, and the moisture on the surface of human skin is also evaporated rapidly, which can lead to itchy skin. Second, if one’s skin type is originally oily skin, consider that the itchy skin may be caused by clogged hair follicles, which is related to the basic condition of the skin. To pay attention to the usual bath, if the frequency of bathing in winter is too frequent, it will lead to damage to the human skin mucosa, resulting in itchy skin. If the frequency of bathing is too little a week, it will also cause itching. Third, with the recent time to take drugs also have a relationship, drugs can also lead to a series of adverse skin reactions. Usually drink more water and eat fresh fruit, to improve the skin’s immune system is helpful.