A milk bleb, also called a milk blister, is a small white or yellow spot on the nipple caused by a blocked milk duct opening. It occurs when thickened milk or skin blocks the flow, leading to trapped milk behind the bleb. This can cause sharp pain during breastfeeding, localized tenderness, and sometimes swelling.
Milk blebs are often confused with thrush, but unlike thrush, they are typically painful only during nursing and visibly have a pinpoint blockage. Warm compresses, gentle exfoliation with a warm washcloth, or soaking the nipple in warm salt water can help release the blockage. Nursing frequently and ensuring proper latch also prevents recurrence.
If the bleb doesn’t resolve in a day or keeps returning, consult a lactation consultant or healthcare provider. Left untreated, it can lead to mastitis. Prompt care ensures continued breastfeeding comfort and milk flow.