If the crust on the nipple is formed as a result of increased sebum or milk production, it is considered normal. It is not normal if it is the result of a disease such as breast cancer or nipple inflammation. Scabs on the nipple may be normal. Since there are many causes of scabs on the nipple, determining whether a scab on the nipple is normal or not needs to be determined on a case-by-case basis and cannot be generalized. If the crust on the nipple is formed by an increase in sebaceous gland secretion, or not cleaned up in time after excessive milk secretion, it is mostly considered normal and there is no need to worry too much. However, if the crust on the nipple is caused by a disease, which is mostly seen in breast cancer and nipple inflammation, it is not normal and may be accompanied by redness, swelling, pain and mild erosion of the nipple. Scabs on the nipple should also be considered as nipple fluid causing scabs, and you need to go to the hospital in time to complete a series of relevant examinations to clarify the specific causes.