The common causes of body itching include dry skin, visceral diseases, tumor diseases, neurological disorders, endocrine abnormalities, infectious factors, allergic factors and so on. 1. Dry skin: If the water temperature is too high or alkaline soap is used during bathing, or the aging skin of the elderly, sebum secretion decreases, which will easily lead to dry skin, causing the free nerve endings in the papillary layer of the dermis and the epidermis below to react and itchy skin appears. 2. Visceral diseases: such as kidney disease, jaundice liver and gallbladder disease, often with itchy skin symptoms. 3. Neoplastic diseases: such as leukemia, Hodgkin’s disease and other malignant tumors, can cause itchy skin symptoms. 4. Neurological disorders: usually mental tension, depression or anxiety and other adverse mental state, can lead to generalized or limited itchy skin. 5. Endocrine abnormalities: usually amenorrhea, menstrual disorders or ovarian diseases, resulting in large changes in the level of hormones in the body, often cause pruritus vulvae. 6. Infectious factors: such as vaginitis, can trigger vulvar itching. 7. Allergic factors: if contact with allergenic pollen, pet hair, dust, etc., can cause local or generalized skin itching. Itchy symptoms, it is recommended to go to the hospital in time to find out the cause, and follow the doctor’s instructions for symptomatic treatment.