A lot of small particles on the nipple may be a normal physiological phenomenon like Montgomery’s nodes, or it may be caused by the blockage of sebaceous glands, the formation of particles from the coagulation of milk, and so on. 1. Montgomery’s Nodule: It is a normal physiological structure. They are usually opened during pregnancy and breastfeeding, and if they are stimulated, they will happen to stand up like goose bumps. This leads to a lot of small particles on the nipple. 2. Sebaceous gland clogging: When the skin of the breasts is not washed regularly, it can lead to the sebaceous glands secreting a lot of substances that gather here, thus clogging the glands and leading to a lot of small particles on the nipples. In this case, it is recommended that the breasts should be washed frequently and undergarments should be changed regularly. 3. Milk coagulation particles: When you are pregnant or breastfeeding, the milk flowing out of the milk hole cannot be cleaned up in time, which can lead to the milk attached around the nipple coagulating into small particles, resulting in a lot of small particles on the nipple. At this time, you can use warm salt water to clean the nipple to avoid infection. In addition, nipple eczema, certain skin diseases, breast cancer, mastitis may also appear similar clinical manifestations, when there are a lot of small particles on the nipple, it is recommended to go to the hospital for an examination, to clarify the cause of the disease, under the guidance of the doctor for targeted treatment.