The body is always itchy for many reasons, such as eczema, urticaria, diabetes and other factors may lead to itchy skin, it is recommended that the patient seek medical attention in a timely manner to clarify the cause of the disease, targeted treatment, such as the development of good hygiene habits, the use of dexamethasone, loratadine and other drugs for treatment. 1. eczema: is caused by a variety of internal and external factors of the superficial dermis and epidermal inflammation, clinically acute lesions to herpes mound, with a tendency to ooze, the chronic phase to the moss-like changes in the main, easy to recurring, often accompanied by itching and other symptoms, can be used externally dexamethasone, tricholoma, such as drug treatment. 2. Urticaria: It can be manifested as lumpy elevations of different sizes, bright red or pale white, accompanied by obvious itching. Oral loratadine, diclofenac and other drugs to stop itching treatment. 3. Diabetes: diabetic patients with peripheral neuropathy, may also lead to symptoms of itching, mostly in the upper limbs, lower limbs, distal mainly, and to the night itching mainly, can be used Rigolenide, metformin and other drugs to control blood sugar. There are many other factors that lead to itching, you should consult a doctor in time, in order to clarify the cause of the symptomatic treatment, the drugs need to be used in accordance with the doctor’s instructions, avoid private medication, so as not to delay the condition.