There are many causes of itchy skin, such as allergy, jaundice, diabetes, etc., and different treatments, such as anti-allergy, treating the original cause, moisturizing, etc. 1.Skin allergy. The most important treatment for itching caused by skin allergy is to get rid of the allergen. It is often difficult for patients to find allergens on their own, so they can seek medical attention to screen for allergens. Oral or topical antihistamines, such as oral loratadine, can be used to relieve symptoms. 2. Jaundice. Jaundice from various causes can lead to itchy skin. In addition to itching of the skin, jaundice is characterized by a more pronounced yellowing of the skin and mucous membranes, often accompanied by a history of liver disease. In order to relieve the symptoms of itchy skin, it is necessary to treat the original digestive system disease first. 3. Diabetes. High blood sugar can also lead to itchy skin. Itching can be relieved by lowering blood sugar, such as with medications like metformin and insulin. Itchy skin patients are recommended to actively seek medical treatment, the dosage of the above drugs should follow the doctor’s instructions.