There is nothing on the body but especially itchy may be caused by pruritus or diabetes mellitus, it is recommended to improve the relevant examination and symptomatic treatment. 1. Pruritus: Pruritus caused by winter can be characterized by dry, flaky and itchy skin, with dots or lines of scratches appearing after scratching. In this case, it is recommended to reduce the frequency of bathing, do not use too hot water to bathe, less use of shower gel, apply body lotion and moisturizer after bathing to protect the skin barrier from damage, as well as drink more water to replenish the body with enough water, and so on. 2. Diabetes: Diabetes can also cause itchy skin, and usually there is no rash, skin color and other changes. Mainly due to diabetes-induced peripheral neuropathy caused by itchy skin, the treatment needs to control the stability of blood glucose, reduce itching, but also can be applied externally to stop itching, oral methylcobalamin, zinc sulfate, such as nutrient nerves, to alleviate the symptoms; diabetic patients should avoid scratching in order to prevent infection. There may be other reasons for the occurrence of the above situation, it is recommended to go to the hospital, identify the causes, symptomatic treatment, medication should be used in accordance with medical advice.