Itchy body and hives, eczema and other skin diseases or mental psychological factors, liver and kidney function abnormalities, so it may be a sign of these diseases, but also pay attention to the dry skin, do not pay attention to clean and other reasons will also appear on the itchy body symptoms. 1. urticaria: for contact with pollen, animal fur and other causes of itchy skin, and out of erythema, doughnut-like rash, be alert to the occurrence of urticaria. 2. Eczema: If there are symmetrically distributed on both sides of the body of the papules, papules, vesicles and other rashes, we should be alert to the occurrence of eczema. 3. Mental and psychological factors: for people who are overly nervous or have recent stress or overwork, itchy skin and other discomforts may sometimes occur. 4. Abnormal liver and kidney function: For patients with abnormal liver and kidney function, there may be a combination of elevated bilirubin levels and urea levels, which can lead to itchy skin. At the same time for usually dry skin, do not like to take a bath, do not change clothes in time, may also appear on the body itchy situation, at this time more with the disease has no obvious relationship. The causes of itchy body are many. For patients with itchy body, it is recommended to go to the regular hospital dermatology consultation, under the guidance of the doctor to clarify the cause of the disease after active treatment.