There is no clinical evidence that itchy breasts indicate 10 major diseases, so patients need not be overly nervous. Common causes of itchy breasts are uncomfortable underwear size or poor material, resulting in friction on the breasts, generally after replacing the underwear, the symptoms of itchy breasts will also be relieved. However, when breast itch accompanied by other clinical symptoms may also be due to the following reasons: 1, breast eczema: mostly due to long-term damp environment caused by the breast, common in breastfeeding women, patients can be manifested as breast itch, erythema, papules and other symptoms, the symptoms are more serious patients can follow medical advice topical tacrolimus ointment, pimecrolimus cream, etc. for treatment, breastfeeding women should pay attention to Temporarily stop breastfeeding to prevent the drug from being inhaled by the baby; 2. Allergic reactions: allergic reactions caused by the use of irritating body wash or body lotion, generally manifested as itching, redness and swelling of the breasts and other parts of the body. Patients with mild symptoms can use compounded glycolic lotion to apply itching locally, and patients with more serious symptoms can be treated with oral loratadine, benadryl and other anti-allergic anti-itch drugs; 3, breast Paget’s disease: the cause is not clear, and may be related to endocrine, radiation exposure, genetic factors. Clinical symptoms can be manifested as itching and redness of the nipples, and with the development of the disease, nipple erosion, desquamation, and even exudate and lumps can appear. It is mainly treated by surgery, and can be treated with anti-estrogenic drugs, progesterone drugs and radiotherapy as prescribed by the doctor. Itchy breasts are usually not a symptom of a serious disease, so patients do not need to worry too much. If patients have breast lumps and nodules, accompanied by pain, breast milk and fluid, they need to go to the hospital for examination as soon as possible.