There are more reasons for itching everywhere on the body, such as urticaria, drug rash, ringworm, diabetic patients, etc. can cause the symptoms. 1. Urticaria: commonly known as rubella, because the skin mucosa due to a temporary increase in vascular permeability and the occurrence of limited edema, commonly caused by ingesting allergens, viruses, fungal infections and drugs. Especially the acute spontaneous urticaria, the onset of the disease is more acute, the patient suddenly self-conscious itchy skin, and soon the itchy parts can appear in varying sizes of the red red red masses. 2. drug rash: mainly through the oral, injection and inhalation of drugs into the body, resulting in skin and mucous membrane inflammatory lesions, itchy symptoms appear all over the body. 3. ringworm: mainly refers to the patient in addition to the scalp and hair and other parts of the skin is infected by ringworm bacteria, thus causing the symptoms of ringworm. It can lead to the appearance of red papules, papules, small blisters, accompanied by itching and other uncomfortable symptoms, especially because of itching and scratching, can cause local eczema-like or moss-like changes. 4. Diabetic patients: patients due to the body’s blood glucose long-term high level state, can lead to vascular neuropathy, sensory abnormalities, some patients can also appear itchy symptoms. In addition, eczema, liver and gallbladder diseases, as well as dry skin can also cause itching, it is best to go to the hospital in a timely manner to avoid delays.