Symptoms of itching on the face and body require careful observation of the appearance of the skin. If there is no change in appearance and the texture is normal to the touch of the hand, it is possible that the pruritus is caused by allergic factors and may also be related to elevated blood sugar. After the increase of subcutaneous sugar content will stimulate the skin receptors and thus trigger itchy skin, it is recommended to test the blood sugar at the local hospital now If the blood sugar is elevated, it is recommended to choose glucose-lowering drugs. If the blood sugar is normal, consider that it should be caused by simple allergic factors, the condition is the formation of subcutaneous receptors in allergy, stimulation and other factors of sensory abnormalities. If there are obvious erythema and papule-like changes on the skin in the itchy area, consider that it may be eczema-like dermatitis or atopic dermatitis that later leads to this condition. Certain neoplastic diseases may also cause itching on the body, and a systemic screening is needed to determine this.