The nipple is a little torn, the mammogram will not be infected with disease. Breast ultrasound is the use of superficial probe coated with coupling agent to scan the entire breast, only contact with the surface of the skin, there is no risk of infectious diseases, and ultrasound probe will be sterilized after use, there will be no infectious diseases, nipple breakage can be used lanolin ointment, and secondary bacterial infections can also be used mupirocin ointment. Wear cotton, breathable clothes, avoid chemical fiber clothes to prevent abrasion of the nipple, and pay close attention to changes in the condition, if the nipple breakage has not improved or aggravated, it should be promptly treated. Please follow your doctor’s instructions for medication.