The appearance of inexplicable itching on the body may be related to dry skin, diabetes, neurodermatitis, pruritus and so on. 1. Dry skin: dry winter environment, dry climate, excessive bathing, etc., cause the water in the skin will be excessive evaporation. Skin becomes dry and fragile, and impaired skin barrier function can also cause itching. 2. Diabetes: under the condition of high sugar stimulation, the skin is easy to breed bacteria or long-term poor blood sugar control, can cause local microangiopathy and neuropathy, causing body itching. 3. Neurodermatitis: the abnormal thickening of the stratum corneum caused by overthinking, nervousness, alcohol consumption, sun exposure and other factors, can also appear on the body itching. 4. Pruritus: it is a kind of disease that only has skin itching, no obvious rash, there are generalized pruritus and localized pruritus, not contagious, but easy to recur. When inexplicable itch on the body, it is recommended to consult a doctor in a timely manner, follow the doctor’s instructions for further examination, under the guidance of the doctor to clarify the cause, and targeted treatment or treatment.