Small white particles near the nipple may be formed by sebaceous gland hyperplasia, which is not a disease and does not require treatment and does not affect your health. There are many reasons affecting sebaceous glands, such as puberty, pregnancy, medication, diet and mood. In order to avoid excessive sebaceous gland hyperplasia, you need to pay attention to regular living habits, do not stay up late, rest early at night, spicy stimulation, avoid drinking alcohol, sebaceous gland hyperplasia should not be handled by yourself, especially do not squeeze and pick, so as not to cause skin infections or scars.