Ductal spasm is a common type of breast problem that occurs most often in breastfeeding women and is associated with cracked nipples and incorrect breastfeeding habits. When breastfeeding, as the baby sucks on the nipple, it can cause persistent spasm of the blood vessels around the milk ducts, resulting in persistent severe pain around the nipple and areola, and the nipple is pale in color and ischemic, and when the spasm stops, the pain in the breast disappears, and the nipple can be returned to its normal color. Therefore, if you can exclude acute mastitis and breast hyperplasia and other breast pathologies during the breastfeeding period, when there is severe pain in the breast, you should be highly suspected of suffering from ductal spasm, and you should go to the breast surgery department or general surgery department of the regular hospital to avoid prolonged spasm, which may cause ischemic necrosis of the nipple. In life, you should also develop good breastfeeding habits and posture, avoid prolonged breastfeeding, and wear loose and breathable underwear to avoid compression of nipple and areola tissues.