Itchy skin all over the body, the more you scratch, if there is no rash consider pruritus the most likely. The etiology and pathogenesis of pruritus are unclear, and may be related to skin degeneration or diseases of the medical system, especially endocrine metabolic diseases, malignant tumors, neuropsychiatric diseases, etc. External factors such as environmental factors, taking drugs or eating a particular food, using drugs, local infections, etc. may cause pruritus to appear, as well as emotional stress, anxiety, depression, eating Itching can also be triggered by emotional stress, anxiety, depression, eating irritating foods, and overheated foods. After the emergence of pruritus, you need to actively look for the cause, according to the cause of the disease to choose the appropriate treatment, such as other diseases, active treatment of the primary disease, at the same time must pay attention to skin moisturization, avoid tension, anxiety, local can be used topical drugs containing mint, camphor to stop itching.